Sketch and improv troupe Polite Ink. is marking (we promise we won't fill this write-up with puns) five years with an anniversary show, "Making Our Mark." The PI ensemble — Michael Anthony, Don Beechner, Corrie Carter, Karen Craft, Bolan Graham, and Reuben Tapp — will do what it does best: Staging hilarious original sketches and trying keep things together as they fly with audience suggestions. Polite Ink. has consistently been a "Best Local Comedy Group" finalist in CITY's Best of Rochester readers' poll.