First off, welcome to the Mac world. I've had both Macs and PCs for well over 10+ years now....but always prefer the Mac OS.
I recently switched to a MacBook Pro from the tower machines/iMacs. Lovin' it. Pretty much the same experience except for not having quite the 'internal' expansion capability. One of the nicest things is being able to run two monitors (one on the MBP, one external).
Also, if it helps with the $, buy refurb, or slightly used. I ended up with a 8 month old MBP, still with 3 years Apple Care, for $1000 less than new. Was from a college student looking to upgrade to a desktop system for video/music editing after he got his Masters.
And, as for info/apps out there available on the Mac, here's one of my other posts:
http://www.modmyi.com/forums/chit-ch...ml#post1349001
HTH.