I usually do brakes,oil changes, plugs and wires myself. I make sure to buy the oil filter from the dealer and buy the recommended oil. I save the dealer receipts for everything and keep them for my records.
Tranni fluid changes and rear oil changes I'll probably do myself but maybe not. It depend's on how easy it is to refill the fluid. I have a 4 Post Lift in my garage so it make's thing's a little easier. I just did my first oil change in the 06' Coupe at 940 mi. and kept the receipt for the oil from NAPA Auto Supply. The Wizard sent me the Mopar oil filter so when I drop off my car to him for the exhaust I'll get the receipt for my records.
I was told by the dealer that as long as you keep your receipts you are O.K., but who know's. I'll probably go to The Wizard for the longer interval service checkup's, but not for every oil change.