Lotus Elise or Exige. Too small to get laid in, but you get laid the minute you get out. Faster off the line than most motorcycles, corners at close to 3g with good tires, and chicks dig the design. Best of all, it's practically affordable (but you don't get any "shi-shi" extras like air conditioning, cruise control, stereo).

For a bigger wallet, I'd agree on the Cobra, but someone said they don't corner worth a crap (turning radius sucks) but chicks fall all over that design as well. Just don't burn yourself on the exhaust pipe and wear earplugs. Gets my vote for best engine growl ever

For big wallets and guys who want hand jobs from women they hardly know, The Ferrari 458 Spyder (look girls, it's a convertible!) or one of those Masaratis.

It's season down here, and it is nausiating how many of the cars I just listed are driving around town now....