Does anybody have recommendations for clipless pedals that can be used with regular shoes? I only have 1 bike, but I use it enough that I think clipless pedals would offer a nice advantage. However, I want to be able to just hop on my bike with any shoes, in the event that I'm just biking a short distance, and going to be walking around a lot. I suppose I could get shoes that are more walking friendly, but I think it would suit me more to have pedals which accomodate both clipless and regular shoes.
I've been using Shimano A530 pedals for that purpose. Mountain SPD-compatible clip on one side, with a nice wide flat platform on the other.
I've also used the old Shimano M324 pedals, but prefer the slightly lighter weight and lower profile of the A530s.
Note that other foot retention systems, such as PowerGrips and the like, will work with all shoes (such as winter boots) and many existing platform pedals.
I'd get a pair of Shimano SPD pedals and get the 'snap on' flats for one side. You'll only be able to clip on one side then but you'll also have flats on one side.
Another option would be to look at a downhill style pedal with a large platform on it. As long as the SPD portion isn't raised too much you can probably use them quite comfortably with regular shoes.
Take a look at the newer "hybrid" pedals that have both a clipless side and a platform side with grip for regular street shoes.
I've used the Forte Campus/Nashbar Rodeo/Wellgo WPD-95B (all are similar Wellgo dual sided SPD clones with different brand names) for thousands of miles, and am very satisfied with them. There's also the Nashbar Highlander if you want a big BMX-type body on the pedal. All can be found for $30 or so; the Rodeo is on sale for $20 right now.