First we had a Druid do it, then a Pally, and then after Wrath Hunters and Death Knights got into the mix, and now it seems anybody with a pulse and a level 80 can solo the old 40-man boss Onyxia. Here's video of an Elemental Shaman taking the dragon down (Skitlash of the guild Unrelenting on Aman'thul), and we've even heard of a Disc Priest doing the deed (I believe that way back, when the Druid first downed Ony solo, a Priest, we thought on the podcast, was the least likely class to do it).
But time has proven us wrong. Does any of this mean anything? Probably not -- while it's certainly an achievement for these guys, the old bosses will only get easier as time goes on (until, of course, Blizzard decides to break out some Heroic versions of these instances), and the once-feared Onyxia will only become more and more of a punching bag. Grats to everyone who's been able to solo the old lady of raiding, but at this point, if a Disc Priest can do it, anyone can.