The code/package that deals with Video Embedding has been updated and has some nice changes (defaults to High Quality playback for youtube videos, etc).

A list of supported embedded video sites:
 YouTube
 YouTube (Playlists)
 Dailymotion
 Google Video
 BBC News (UK Only)
 BBC Iplayer (UK Only)
 MegaVideo
 MetaCafe
 Veoh
 123video
 5min Life Videopedia
 9You
 ABC News
 AdultSwim
 AniBoom
 AOL Uncut
 Archive.org
 Atom
 Bebo
 Blip
 BoFunk
 Break (SEO Style)
 Break (User Content)
 Brightcove.com
 Brightcove.tv
 Broadcaster
 CarPix Tv
 Cellfish
 Clarin
 Clip.vn
 ClipFish (Old)
 ClipFish (New)
 ClipJunkie
 ClipLife
 ClipMoon
 Clipser
 ClipShack
 Cold-Link
 CollegeHumor
 ComedyCentral(Inc. TheDailyShow)
 Crackle
 CrunchyRoll
 Current
 Dailyhaha
 Dave.tv
 DotSub (w/o Captions)
 DoubleViking
 dropshots.com
 Dv.ouou
 EASportsWorld
 EbaumsWorld Videos
 ESPN
 FunnyOrDie
 G4TV
 GameKyo
 GameSpot
 GameTrailers (Inc. User Movies)
 Gametube.org
 GameVideos.1up
 GarageTv
 Gloria
 Glumbert
 GodTube
 GoFish (Videos)
 GoFish (Channels)
 GotGame
 GrassRoots ItvLocal
 GrindTv
 Guba
 TheHub
 Hulu (Usa Only)
 Humour
 Video.i.ua
 IGN
 IMDB
 Imeem (Video)
 ImageShack
 IndyaRocks
 Izlesene
 Jokeroo
 Jubii Tv
 JujuNation Video
 JumpCut
 JustinTV
 Kewego
 Koreus
 Last.fm (Videos)
 Libero
 LiveLeak
 LiveVideo
 Machinima (Old)
 Machinima (New)
 Video.mail.ru
 Milliyet
 MoFile
 MotionBox
 Mpora
 Mpora TV
 MSN Live/Soapbox
 MtvU (Usa Only)
 MyNet
 MySoccerMedia
 MyShows.cn/SeeHaha.com
 MySpaceTv
 MyVideo
 MyVi
 M Thai
 NhacCuaTui
 OnSmash
 Photobucket
 PikNikTube
 Putfile
 Rambler
 RawVegas
 Revver
 RuTube
 SevenLoad
 ShareView
 Sharkle
 Smotri
 Snotr
 SouthPark Studios
 Space.tv.cctv.com
 Spike
 SportsLine (CBS Sports)
 StageHD
 Streetfire
 StupidVideos
 TagTé
 TinyPic
 Tm-Tube
 TrailerAddict
 TrTube
 Trilulilu
 Tu.tv
 Tudou
 UOL VideoLog
 UUME
 u-Tube
 VideoJug
 videos.sapo
 Vidiac
 Viddler
 Videa
 VideoNuz
 VidiLife
 VidMax
 Vimeo
 Vidivodo
 VSocial (Type1)
 VSocial (Type2)
 WeGame
 Wipodo
 Yahoo Video
 Yahoo Video HK
 Yahoo Music Videos
 YouKu
 You.Video.Sina.com.cn

Supports 17 Audio Sites including:

BooMp3
 Deezer
 Divshare (audio only)
 EbaumsWorld Audio
 GoEar
 iJigg
 Imeem (Music)
 Jamendo
 JujuNation Audio
 Last.fm (Audio)
 Mp3tube
 MusOpen
 Passionato (Single Preview)
 Passionato (Playlist Preview)
 Project Playlist
 Seeqpod
 Songza
 Imeem (Playlists)
 NewGrounds
 Orb
 VoiceThread