This is a Quick Referance if you are looking to find an Avatar Episode On-line. More will be added as Nick airs more shows.

First Pilot (found on YouTube):
Part 1: www.youtube.com/watch?v=h36X-8ELbAM
Part 2: www.youtube.com/watch?v=0picOWWuOOQ&NR
Part 3: www.youtube.com/watch?v=zVWIZLXGYzk&NR

BOOK: WATER (Season I)
The Boy in the Iceberg & The Avatar Returns (First Episode)
Part 1: www.youtube.com/watch?v=6HtjfFvewWI
Part 2: Sorry, there are no videos for the 2nd part on YouTube...
Part 3: www.youtube.com/watch?v=QbpEhiYMmKo
Part 4: www.youtube.com/watch?v=6IakYaG8pIo
Part 5: www.youtube.com/watch?v=OS0eVyMVAzU

The Southern Air Temple
Part 1: www.youtube.com/watch?v=iJM3iHELrWg
Part 2: www.youtube.com/watch?v=kvaXB0NFdbA
Part 3: www.youtube.com/watch?v=st2UZdJAdg4

The Warriors of Kyoshi
Part 1: www.youtube.com/watch?v=dYPweFUV4gI
Part 2: www.youtube.com/watch?v=wx69ENp_VG0
Part 3: www.youtube.com/watch?v=imJmshgoAUQ

The King of Omashu
Part 1: www.youtube.com/watch?v=DegDETxrBR8
Part 2: www.youtube.com/watch?v=DjLfO7dyEY8
Part 3: www.youtube.com/watch?v=edXpO4XBRDM

Imprisoned
Part 1: www.youtube.com/watch?v=zdtJHUDrdl4
Part 2: www.youtube.com/watch?v=VfmfC1-RCMc
Part 3: www.youtube.com/watch?v=8ysLwgSwx6g

The Spirit World (Winter Solstice, Part 1)"
Part 1: www.youtube.com/watch?v=oQ8wmiNciug
Part 2: www.youtube.com/watch?v=hv3CHodSuDM
Part 3: www.youtube.com/watch?v=uuRRdD5u-x8

Avatar Roku (Winter Solstice, Part 2)"
Part 1: www.youtube.com/watch?v=qeDGaKs4WZo
Part 2: www.youtube.com/watch?v=TKcLN-F_J8E
Part 3: www.youtube.com/watch?v=-feKiODIOL8

The Waterbending Scroll
Part 1: www.youtube.com/watch?v=dhKzpWih6ow
Part 2: www.youtube.com/watch?v=LgV1eHA8tqI
Part 3: www.youtube.com/watch?v=F6AHn7pl83g

Jet
Part 1: www.youtube.com/watch?v=u28TOypVbBM
Part 2: www.youtube.com/watch?v=cI3VXK_SXU0
Part 3: www.youtube.com/watch?v=hjJxJidmObA

The Great Divide
Part 1: www.youtube.com/watch?v=spFmhxowHdc
Part 2: www.youtube.com/watch?v=vk2ToKZ0jNI
Part 3: www.youtube.com/watch?v=vlCh3Pkh5D8

The Storm
Part 1: www.youtube.com/watch?v=Ca-XG_J6ryI
Part 2: www.youtube.com/watch?v=nStU6Oxj-wQ
Part 3: www.youtube.com/watch?v=qsPHOeZgLuM

The Blue Spirit
Part 1: www.youtube.com/watch?v=MBgP5Y9qRGA
Part 2: www.youtube.com/watch?v=xyo7ba2557I
Part 3: www.youtube.com/watch?v=H7P9gMUDet8

The Fortuneteller
Part 1: www.youtube.com/watch?v=r12Z38xltGU
Part 2: www.youtube.com/watch?v=qMWK9c2ToYE
Part 3: www.youtube.com/watch?v=GJb9shGbOOg

Bato of the Water Tribe
Part 1: www.youtube.com/watch?v=u1V6sgzqtBw
Part 2: www.youtube.com/watch?v=rici0vp78vY
Part 3: www.youtube.com/watch?v=_74x8ltscpM

The Deserter
Part 1: I apologize, but there are no videos on YouTube for this episode
Part 2: Sorry
Part 3: Sorry

The Northern Air Temple
Part 1: Sorry, it's the same for that one
Part 2: Sorry
Part 3: Sorry

The Waterbending Master
Part 1: www.youtube.com/watch?v=jossd8Y_TYs
Part 2: www.youtube.com/watch?v=HHtrTYt9Xds
Part 3: www.youtube.com/watch?v=0A-lpsrAN1w

Siege of the North (Part I & II)
Part 1: No video (Sorry)
Part 2: No video (Sorry)
Part 3: No video (Sorry)

Part 1: www.youtube.com/watch?v=avGbr7ViQZI
Part 2: www.youtube.com/watch?v=WHruNE_YOeU
Part 3: www.youtube.com/watch?v=n990pnUNWXg

BOOK: EARTH (Season II)
The Avatar State
Part 1: www.youtube.com/watch?v=5Bt6Q0IIY9I
Part 2: www.youtube.com/watch?v=yb0XZgxb2GA
Part 3: www.youtube.com/watch?v=3blIyGl3EbA

The Cave of Two Lovers
Part 1: www.youtube.com/watch?v=xiBGU7SkriE
Part 2: www.youtube.com/watch?v=rvM80Y69SNY
Part 3: www.youtube.com/watch?v=hLeyJES9sas

Return to Omashu
Part 1: www.youtube.com/watch?v=_zWc-j1W6Xk
Part 2: www.youtube.com/watch?v=o6fnVHw96us
Part 3: www.youtube.com/watch?v=4n3DC5dWoVw

The Swamp
Part 1: www.youtube.com/watch?v=KCs56jKtQck
Part 2: www.youtube.com/watch?v=jTXsY7CHVE8
Part 3: www.youtube.com/watch?v=9po3qkxDD-E
Part 4: www.youtube.com/watch?v=FVQZ1fGmBl4

Avatar Day
Part 1: www.youtube.com/watch?v=yvJPZv86218
Part 2: www.youtube.com/watch?v=6hJua6BYJ08
Part 3: www.youtube.com/watch?v=mLngFSzDNjM

The Blind Bandit
The whole episode: www.youtube.com/watch?v=a5CZI8TUDB0

Zuko Alone
Part 1: www.youtube.com/watch?v=VMwjZVeSES0
Part 2: www.youtube.com/watch?v=5Rs2hAcy_WI
Part 3: www.youtube.com/watch?v=RtvcqYfOUN0

The Chase
Part 1: www.youtube.com/watch?v=prXBT7PlnwY
Part 2: www.youtube.com/watch?v=DINRJN0OfbA
Part 3: www.youtube.com/watch?v=En-qTQwsZH0

Bitter Work
Part 1: www.youtube.com/watch?v=m8ibCASVA40
Part 2: www.youtube.com/watch?v=m8ibCASVA40
Part 3: www.youtube.com/watch?v=8Vsjt8Im0zk

The Fury Of Aang (The Library)
Part 1: www.youtube.com/watch?v=ir9DKUS0gWU
Part 2: www.youtube.com/watch?v=oB4lh8bcB_c
Part 3: www.youtube.com/watch?v=qOX23vzwsIY

The Fury Of Aang (The Desert)
Part 1: www.youtube.com/watch?v=G9dnxHzIsSU
Part 2: www.youtube.com/watch?v=GanK0u4lufs
Part 3: www.youtube.com/watch?v=uCb1qvzQnBA

The Serpent's Pass (Secret of the Fire Nation SotFN part 1)
Part 1: www.youtube.com/watch?v=QInparOR87k
Part 2: www.youtube.com/watch?v=D7RhIxvZIPg
Part 3: www.youtube.com/watch?v=-2G95L2pZ78

The Drill (Secret of the Fire Nation SotFN part 2)
Part 1: www.youtube.com/watch?v=OXefxtw2b7U
Part 2: www.youtube.com/watch?v=usqbCV1rTlk
Part 3: www.youtube.com/watch?v=Z_c5-kMSaIo

City of Walls and Secrets
Part 1: www.youtube.com/watch?v=GvCVlno2WK0
Part 2: www.youtube.com/watch?v=rhyVByVTU-Y
Part 3: www.youtube.com/watch?v=SuDSihhaFTA

The tales of Ba Sing Se
Part 1: www.youtube.com/watch?v=2Y3jhzJT5JA
Part 2: www.youtube.com/watch?v=SnwuuFyt7zE
Part 3: www.youtube.com/watch?v=mO1TsI2z8IU

Appa's Lost Days
Part 1: www.youtube.com/watch?v=EkYASMF4qJo
Part 2: www.youtube.com/watch?v=bvPA9o2rRxQ
Part 3: www.youtube.com/watch?v=M5xE76ISq_I

Lake Laogai
Part 1: www.youtube.com/watch?v=K8-bG6v_cow
Part 2: www.youtube.com/watch?v=ZPTaW5ngrKg
Part 3: www.youtube.com/watch?v=FBnheZ3zNmY

The Earth King
Part 1: www.youtube.com/watch?v=xUq_BJ9teJk
Part 2: www.youtube.com/watch?v=QeZ2EZvV_uQ
Part 3: www.youtube.com/watch?v=k1JI5KwhWss

Season Finale (The Guru and The Crossroads of Destiny):
Part 1: www.youtube.com/watch?v=KnD_iQ0IXjE
Part 2: www.youtube.com/watch?v=C1BQf12YTts
Part 3: www.youtube.com/watch?v=_kGCLpLOAZs
Part 4: www.youtube.com/watch?v=9YqtDd5uu4Q
Part 5: www.youtube.com/watch?v=rL7BDw5CknQ

**All courtesy youtube.com (specifically firebender67, airbender503, ignite444, ZizzoKojin and lionelra). Find any Problems? PM me and I’ll fix it. Please don’t post to thank or hate me. PMs, Exulting, and smiting work just fine.**

[glow=red,2,300]Karena Edit: List Updated at Request. Links provided by Hieu.[/glow]

[glow=Brown,2,300]Joychi Edit: The list has been updated again, with the rest of the Season and the Season Finale.

2nd Edit: I updated it again because the previous videos have been deleted... Unfortunately, some videos completely disappeared from YouTube ;D Sorry....[/glow]