Abomination Wing Bosses:

Patchwerk - Horde Kill Video - Alliance Kill Video
Grobbulus - Horde Kill Video - Alliance Kill Video
Gluth - Horde Kill Video - Alliance Kill Video
Thaddius - Horde Kill Video - Alliance Kill Video

Spider Wing Bosses:

Anub'Rekhan - Horde Kill Video - Alliance Kill Video
Grand Widow Faerlina - Horde Kill Video - Alliance Kill Video
Maexxna - Horde Kill Video - Alliance Kill Video

Plague Wing Bosses:

Noth the Plaguebringer - Horde Kill Video - Alliance Kill Video
Heingan the Unclean - Horde Kill Video - Alliance Kill Video
Loatheb Horde Kill Video - Alliance Kill Video

Deathknight Wing Bosses:

Instructor Razuvious - Horde Kill Video - Alliance Kill Video
Gothik the Harvester - Horde Kill Video - Alliance Kill Video
The Four Horsemen - Horde Kill Video - Alliance Kill Video

Frostwyrm Lair:

Sapphiron - Horde Kill Video - Alliance Kill Video
Kel'Thuzad - Horde Kill Video - Alliance Kill Video