I dunno, like Blues_Man, I'm don't really consider myself with guilty pleasures, but I do have somethings that really stand out of my regular listening material. Such things include...
Of course I don't listen to these people nearly as much as other things, but when they pop up on my playlist I find it hard to not enjoy myself.
The Gods Made Heavy Metal, And They Saw That It Was Good
They Said To Play It Louder Than Hell, We Promised That We Would
Whatever you do, don't eat limes. A friend of mine ate a lime once and BAM!! Two years later. Herpes.