Never got around to it, but I installed Tivo HME. Pretty nifty. Now I can view weather on the TiVo.
I already had Java installed, so the setup took about 2 minutes to see it work on the Tivo. Very impressive. I then moved on to installing the Netflix RSS Reader.
My wife hates going into Netflix to view her queue. Even with her own account profile, I am asked to find out info for her. Now it's as imple as a few remote clicks.