I guess I'll toot my own horn a bit...

5 boxing a DK tank + 4 elemental shaman:

Finished almost all current Heroics in 30 minutes or less (minus the retarded ones like HoS)
Killed Gal'darah before he transformed into a rhino
Managed to have all 4 of my shamans above 4400 DPS on Heroic boss fights, self buffed only, and in some cases 3 out of 4 above 4800
5 boxed 25 man VoA and ended up with all 4 shamans in the top 8 for DPS while also acting as the main tank with my DK - tank was also at #12 on DPS
Got all 5 of my characters bronze drakes from multiboxed CoT timed runs and a blue protodrake for my tank from Heroic UP
Videotaped/uploaded my team running and completing every heroic except Oculus (See the movies forum or the PvE forum)


Failures:

Failed 10 times in a row on the brann event in Heroic HoS before completing it (though I'm not sure this is really a failure - that thing is hard as hell)
Somehow when first getting flying in northrend managed to lose 1-2 shamans every time I dismounted in ice crown and other areas (not sure how this happened - hit my dismount button when my shamans were still over thin air or something...dunno, but it happened daily for weeks)
Ok...can't think of any more, but I'm sure there are some - if I think of any I'll update.