I can never resist an opportunity for a shameless plug, and so here ya go:
The latest and greatest scoop on the Mutobe palm, with the blessing of Dr. Mutobe himself, is the application to sequentially palming multiple coins (and corresponding changeovers) as performed by my friend Kainoa Harbottle, and brought to you by our good friends at Magicsmith. Check out "Palms of Steel 2: Fists of Fury" on sale soon.
The aforementioned palm is the matter of some confusion. It's a little like arguing about the difference between Tenkai Palm, Angle Palm, and Unit grip in the card world. However, the Palm allows you to open your hand out flat, fingers spread, all the while concealing a stack of coins. There's a certain look to the hand that is very disarming from most angles, and as Matt says, it's a natural for the spider vanish.
Mutobe palm has been compared to a grip Frank Drobina used to conceal dimes, as described in Bobo's, and utilized to wonderful result by Larry Jennings in his "22 Cent Transposition".
It also resembles (and I'm not 100% sure here) "Lamont Grip" as used and described by Lamont Ream, and the grip John Carney uses for the stack of coins in his "Hot Slot" routine.
And, while we're on the subject of Spider vanishes, Kainoa Harbottle and PoS2, I'm dying to mention that Kainoa was also nice enough to give me a brand new spider vanish, and it appears on that DVD.
Kainoa's Spider is based on the premise that the idea is to create suspicion, so why not start with the most suspicious coin vanish you can think of. Can you say, "'Over the Top' from Bobo's"?
Sorry for going on like this. All need is George Foreman and we'll have an info-mercial.