Yeah I didn't/don't watch him or Letterman except when channel surfing and then only for a short period of time.
I was surprised when they said he was coming out with a 10 pm show and wondered how in the he11 that would be successful.
I do like the fact that Leno is a car buff and for that alone I could probably get along with him.
I know Letterman is into racing but he just comes off as a complete wiseazz jerk to me...but maybe he's not since I don't personally know him.