Thursday/Friday: Buy iPhone and play with it, plan Japan trip, and optimize a conjugate-gradient preconditioner written in UPC (distributed global address space in C) for solving symmetric positive-definite linear systems. And, hopefully, put some models together about proxy systems.
I'm actually looking forward to post-Japan: Raluca and I are going to do a sweet project with lots of buzzwords in it.
While gleaning what I could about Japan:
"The more observant of you may have noticed that this amounts to 190.7% of the Japanese population practicing religions. [...] The Japanese experience religion very different from other countries."