Watch the What Would Tony Do? online guitar lesson by Angus Clark from 50 Radio Rock Licks You MUST Know
If you're stuck for inspiration look no further than the amazing Tony Iommi. Here's a great repetition lick that uses a pattern of three notes in a rhythmic grouping of four. The wah wah helps reinforce the underlying rhythm by consistently going toe down on the beat. Clapton exploits a similar techinique in "White Room".