Hmm.

Cities I spent at least one night in during 2007:

Oakland (where I live)
San Leandro (stonebender's place)
Chula Vista (where my mother lives)
San Diego (where my father lives, and where my mother was in the hospital)
Pala (where my out-laws live)
Berkeley and Castro Valley (where stonebender was in the hospital)

Can't think of any others, but this is just the kind of thing my brain doesn't like to keep track of.

In '06, the list was probably similar, except it also included Tokyo and San Francisco.