Let's talk protection...lol

I waited for the update of the MacBook Pro line, and bought the lower edition of the MBP 13". Yay! lol....now however I am looking at ways of protecting it. I have a Blackberry Curve that was basically born into a silicon covering because I'm just very protective of scratches and damage....

I'm looking at getting two things from Apple, a sleeve and a shell (click the links to see specifically the ones I am referencing).

I am however also looking at a keyboard covering... what are your experiences with them? Good or bad? Worth it?

Also is there anything else anyone uses to 'protect' their Mac?

Thanks!

Moshi ClearGuards are the keyboard skins of choice.
Moshi ClearGuard Keyboard Protector for Aluminum MacBook and MacBook Pro - Apple Store (U.S.)

What about a trackpad protector? I mean how much of a mac do people usually protect?

moshi 15" PalmGuard Palm Rest Protector for MacBook Pro - Apple Store (U.S.)

You can use all of the above...
Personally, I don't use any of the above, as I prefer to just use my Mac, and look after it.
All these things will stop a little wear and tear, but in saying that, my Mac is 29mths old and close to as new condition.... not enough wear to effect the resale value or basic aesthetics.
The main reason I don't use any of these products as that I like to allow for all the heat dissipation that the engineers designed around.

I was going to ask that question too, about the heat and air circulation. Odds are that I will definitely get the sleeve for transport, and at most the shell depending on how much moving around I will be doing this school year.