I had a game in the Morra Gambit (1.e4 c5 2.d4 cxd4 3.c3) by transposition that didn't turn out too well, but I got quite a good position out of the opening. (I plan to get around to giving the Morra some discussion at my Gambiteer's Guild site eventually, but we might be talking a year or more later, depending on my progress with covering other variations.)
The game, with light annotations:
It's frustrating when you get to play one of your pet lines, emerge with a good position out of the opening and then screw up, but at least then you can't blame your loss on the opening! As it happens, the whole game up to move 13, as observed in my notes, is covered in Marc Esserman's book Mayhem in the Morra (a book well worth getting if you are interested in this gambit, as he carries across a lot of enthusiasm for the opening as well as extensive coverage of the various lines).