I am in Asia for a little over a week and will definitely make an effort to check out any rapid transit systems and compare it to BART. First stop....Taipei's MRT. Will post my thoughts when I have the chance.
Before I forget, did BART add more direct trains to SFO from Pittsburg/Baypoint? Seem like they did! I didn't need to transfer at Balboa Park for once. BART to SFO...still the best way to go, especially in the horrendous wet weather on Friday morning.