1. A-4 Skyhawk. Sexy small jet, single-seater (which I've always thought was cooler than dual-seaters), fast for a ground-attack aircraft, extremely nimble, carrier capable. My dad was going to fly one in the Navy during the Vietnam war era, but flight school was so backed up he went into a beach jumper role.
2. Sepecat Jaguar. Such a sleek yet wicked a2g platform. Gotta love those above the wing mounted heaters too!!
3. A-10. The world's best CAS aircraft, what else needs to be said?
Man, I wish I could have had 4 choices though so I could include the OV-10 Bronco!!