Hold 'em is fun, but I much prefer 7 card Stud. I feel there's less luck involved.
With Hold 'Em, you can be an idiot and go all-in with 3 and 6 against someone with a pair of kings, and then win if the community cards go your way. (That happened to me earlier today on pokerstars.com - I was heads-up against that guy in a 27 player tournament, we were about even and he goes all-in, so i decided to take a chance with my double kings - the flop turned out to be 2, 4, 5 - ticked me off. I ended up 2nd in the tournament though, which is still pretty good

.) (Oh, and a few hands before that, the same guy won a huge pot and got another player out of the tournament with a full house - 2, 2, 2, 4, 4 - he had 2 and 4 when he called the all-in bet

.) I'm not saying Hold 'Em takes no skill - in fact all poker games are 99% skill - but in Hold 'Em you can do everything right but have bad luck on 1 hand and lose eveyrthing; in other words, way too much can be at stake on a single hand, and single hands are more about luck than anything else.
Ooookay, that turned into a giant rant about Hold 'em >_<
Meh. Oooooh, another hand that really ticked me off in Hold 'Em! (also happened today) At the end of another tournament, I had A J, and both got paired in the flop - so I bet big and got called. The other person (not the same person as above) had Q and some low card. Then 10 and K come up on the turn and the river and I lose.

That tournament I got 7th out of 45th.