Sure, having pocket pairs and flopping a set, a boat, or quads is always appreciated, but honestly my favorite flop goes something like this:
I have AXs and flop top pair, ace kicker + nut flush draw, where the X is a 10 or lower.
Sure, this hand is vulnerable to two pair, overcards that hit on the turn or river, low straights, overpairs, etc., but that just means you’ll usually be well compensated when your hand improves.
My favorite type of flop…something like this.
You have KQ suited, flop is something like JTx where two of the cards are diamonds. You have a straight draw, a flush draw, and two overcards. Bet the hell out of this and hope you hit something. With all the outs, it’s like playing an Omaha hand.