In terms of baking several different items well, Backhaus is hard to beat. Each of us had our own favorite: The kids liked the croissants most (chocolate croissant pictured above), for me it was the Country Loaf and my wife most enjoyed the apple and oat crosctock.
Although you can order Backhaus online for pickup--and this is recommended--you can also order at their location in downtown San Mateo. If you do the latter, prepare to wait in line and items do run out. Backhaus also often appears at the San Mateo Farmers Market.
The pastries shown below range in price from $4.50 to $5.50. The Country Loaf, at $8.00, is the basis for all other breads at Backhaus, so it's a good one to start with.