Every time I go to Bend, I always go to Izzy's for pizza. It's not a fancy place or anything, but their pizza is outstanding.
Mountin biking is great around Bend. Check out the Deschutes River Trail. It basically runs from Sunriver to Bend. Fun trail, and very scenic. The Petersen Ridge Trail in Sisters is a good one as well. Order the Treadmaps for the Bend area before you go, and you can plan all kinds of rides from family-friendly to extreme.