Dude, same thing happend to me in live play for a lot more money.
In fact, I am totally going to hi-jack your thread and do my own venting because I never could have gotten away with this in my own bad beat thread.
Earlier this year I went to Foxwoods to play 1/2 NL. After a decent start, I picked up AA and end up heads up against a guy with 22 who flopped a set then turned quads, and then I picked up AA again and was heads up against a guy playing suited connectors who flopped trips . . . and then I picked up AA AGAIN and ran into AA, we go allin preflop, and he rivers a flush on me. All 3 hands were within my first couple hours.
After I re-bought and slowly grinded my stack back up around $500, a new guy sat down and bought in for $300. In one of his first hands he bets like $50 into a $12 pot with middle pair, so I assume he's a maniac. The very next hand I get KK, he reraises me allin, so I call and of course he has AA and his hand holds up.
OMG!!!!!!!WTF!! WTF!!! WTF!!!!! WTF!!!!!
In one of my last hands of the night this maniac who'd been on a heater raises without looking at his cards, I pick up QQ and shove my last $100 or so, and he calls me without looking at his cards!! He has something like J5o, he flops a jack, and then . . . .
My QQ holds up (yay!), numerous casino patrons survive me going completely postal, and BBV is spared a rant of King Niche-esque proportions