Three choices depending on circumstances/how I feel (in order of most commonly used):
Digital - Fuji X100 (and several batteries) - Travel and walking. Light and convenient.
35mm film - Minolta CLE and 40mm Rokkor - Evening/social use (HP5 often pushed to 800/1600 - so much nicer/enjoyable than high iso digital).
MF - Agfa Super Isolette - When I feel "arty" and not too compelled to photograph. Folded it is more convenient to carry than both of the above (and MF!).
Sometimes I get the urge to use Flickr