I quite like it when I get something like A2 of one suit and K3 of another suit. You've got potential nut flush, second nut flush and high and low straight possibilities and quite easy to get away from if the flop isn't favourable.
I Really like getting 10, J, Q, K or similar straight cards, preferably with two cards in two suits, so I have a shot at two flushes as well. Been burned many times with AA, KK, and AK when a player has hit 2 pair, a straight, or flush.