Silver Surfer is taken, so I'll just have to settle for that other all-powerful monochromatic bald guy:
Doctor Manhattan
In brief, he has seemingly unlimited powers of manipulation over matter, energy and his own being, plus the ability to perceive the entirety of the timestream simultaneously.
Doctor Manhattan has awareness of and control over atomic and subatomic particles. He can alter his body's size, coloration, density, and strength. He does not appear to age, need food (although he is shown to eat regardless of this), water, or air, and is, for all intents and purposes, immortal at thirty years old. In addition, he is even able to reconstruct his body if completely disintegrated. He can teleport himself and others over great (even interplanetary) distances. Due to his non-linear perception of time, he sees the past, present and future simultaneously.
The applications of his abilities are limitless, but just those that were documented in the brief run of The Watchmen are the following: He is able to phase any part of his body through solid objects without damaging them, produce multiple copies of himself which function independently of each other, project destructive energy, create force fields, transmute and create matter, move objects without physically touching them, reverse entropy, and, he suggests, create life and walk on the surface of the sun.