Sure, Christian Carvajal expertly reviews theater for the Weekly Volcano - but he's got some really impressive stuff on his resume too. He's a math teacher, for one. Even better, he's a math teachin' sci-fi author who just wrapped up a book tour supporting his latest effort, Lightfall. Carv (as we like to call him) will be signing issues of Lightfall Saturday at Borders in Tacoma. He'll be the really kick-ass looking guy at the table with all the shiny new books - books he actually wrote.

[Borders Tacoma, noon-2 p.m., free, 2508 S. 38th St., Tacoma, 253.473.9111]