We're probably still a way out from grocery stores accepting BTC at the counter. It's still too niche to catch the attention of major outlets -- a good place to start might be small grocery stores instead.

Right now, the revolution of accepting bitcoins for product is happening primarily online (TigerDirect, NewEgg, etc.) And that's because it's extremely easy to do yet-another-digital-thing when you're already online.

I do look forward to the day that I can pay for pizza with BTC, but there will likely first need to be an expansion in adoption and also a change in the public perception of the use of Bitcoin in general.