The Specialized tires that came with my bike finally started picking up bad stuff in the road and eating tubes like a buffet. Had 2 flats this morning and had to walk my bike a couple miles to the bike shop to get a new tube at least. I ended up getting Continental Gatorskin tires and new tubes for a decent deal.
Before the Gatorskins, my latest purchase was a set of Shimano PD-M540 SPD Pedals in silver. Gonna get shoes for the pedals in a month or so.