Belting out the Spice Girls' "Say You'll Be There" is always fun, but sometimes you just want to get in touch with your inner Selena and sing "Como La Flor" while a frozen margarita melts all over the microphone. When it comes to Spanish-language karaoke, 100% de Agave has a complete song list. Once the clock strikes 9 p.m. on Thursdays, the place fills up with people who want to chow down on happy-hour-priced munchies and salsa-dance to the amateur singing.