Maybe it's more a state of mind. I play pretty similarly a lot of the time, but prefer to think of it as my voice or style.

If you're feeling like that, the rap track suggestion is a good one. I don't need to tell you that playing your 'standard' licks over a 5/4 rhythm or whatever will change their sound and structure. You could also try throwing in a sweep/tap sequence or crazy legato run to break things up... it might set you off playing in another direction.