Dan pointed out some nice tidbits about the new MacBook Pros, but he didn't mention something that I just noticed while perusing the MacBook Pro site. The base model (2.16 Ghz core 2 Duo, 15 inch) comes with one gig of RAM standard. This is up from 512 MB. The other two models come with 2 gigs of RAM.
Kudos to Apple for finally shipping portables with a decent amount of RAM in them from the get go.