Box Office disappeared. I tried out Showtimes, but as polaris said, the location service is questionable. I put Google showtimes as a bookmark on my home screen and does a better & faster job. I'll try out Box Office if/when it reappears.
Speedbox (a speedometer that uses GPS to calculate speed) is alright. Have to be travelling at a constant speed for it to display the correct speed, otherwise it's all over the place.
SportsTap and ScoreMobile both look great. I'll get a better sense of both apps once NBA & NHL start up again, as I don't really follow other sports very closely.
Panasonic TH-42PE7U plasma, Toshiba HD-D3, PS3, Shaw DCX3400, Yamaha HTR-6160, Polk 6.1, Belkin PF30, Harmony 700