Best thing on earth to parallel park, I'm 100% convinced, is the jeep. My 2 friends each drive Wranglers, and I've never seen a car that you can put into the tiniest spots like that thing.
I'm not a Jeep fan myself... They roll easily, they're not the best on gas (due to the 4wd), they're not good rides in the slightest (very rough/firm suspensions), but I tell ya... In the city where roads are smooth, and parking tight, you really can't beat them... Other than the gas mileage, which they're not horrible, just not great either. Worse than my 6 cyl. car.
Jeeps though turn on a dime, and my buddy Dan's has squeezed into a space between two other spaces, and still left plenty of room for everyone to maneuver out. It's really impressive.