BWL: Can't do Razorgore, rest is easy enough, though Ebonroc is annoying as hell with his healing.
AQ40: Skeram, Sartura, Fankriss and Huhuran are doable, havent tried Bug Trio. Do not go near Twin Emps or Viscidus on your own. Though I heard Twin Emps could be done as ret?
Gruul's Lair: Gruul isn't hard at all, Maulgar is a little challenging... Make sure you zerg down the priest with pvp trinket and bubble to break CC if needed...
TK: Full clear
SSC: I've done all but Vashj (raped me in P3 with 99 stacks) and Fathom-Lord
BT: Supremus, Akama, Gorefiend and Shahraz are easy, haven't been able to try out Illidan yet.
Sartharion: Joke, but you need help for the trash
Naxx10: Patchwerk, Grobbulus, Noth, Heigan, Loatheb, Anub, Faerlina, Maexxna, Sapphiron, Kel'Thuzad. Still need to take a crack at Razuvious and his wing.
VoA: Earth, Fire and Air bosses
Ulduar10: Flame Leviathan, Ignis, XT002, Kologarn, Auriaya, Hodir, Freya, Mimiron, Vezax.
ICC10: Marrowgar, Lady Deathwhisper, Rotface, Sindragosa, The Lich King
And some of the lvl 85 heroics as well.