Neat idea! I did some riding around Tonawanda last fall when my stepfather was in ECMC for 2 months; it's a nice area.
This year I rode in western Massachusetts, the Netherlands, Oxfordshire (England), and lately in Ile-de-France, in and around Paris. The Netherlands trip (late June/early July) was the only bit that involved travel just to ride (
journal at CrazyGuyOnABike.com). The rest was cycling around where I happened to be living at the time. I should actually say "is," not "was," since I'm still cycling in France.
I should do a map of the year's riding. If you plot out your rides in GPX format (either with a GPS or with a website that will produce GPX files), you can load them into Google Earth and produce a composite map. I did that for the cycling I did in the Paris-Ile de France region in summer 2009, and it was kind of neat:
What's particularly nice about doing this with Google Earth is that the brighter the line is, the more frequently you rode that stretch.