[MrApathy]

Given the shift in your responsibilities over the years it may be worthwhile to take the effort to put together three or four slightly different resumes, each highlighting a different aspect of one of your prior roles. When submitting a resume select the one that most closely matches the responsibilities outlined in the description. Even if you feel like you're master of none, doesn't mean your resume can't have focus.

[chrisbennet]

This. And even more importantly, a custom cover letter (your email) for jobs where you aren't going through a head hunter.