It's here: My first mock draft. I tried holding out a little longer, but it's way too much fun to try and simulate different scenarios for Buffalo. There will be a few more mock drafts posted through draft season, on an "as I feel like it" basis. This will hopefully provide some changing perspective as we learn more about prospects and the Bills sign free agents to shape their needs.
The mock draft was done with Fanspeak's On The Clock draft simulator using Drafttek's big board, and you can find the full results (which includes the picks by the other 31 teams) here.