Review: If you’re going to produce a slapstick-style comedy from another era, you’re going to run the risk of running into sight gags, innuendo and plot twists that are sometimes all too familiar. To this reviewer’s relief, however, “Bullshot Crummond,” the latest production from Collaborative Theatre Project (CTP), has all the aforementioned, but delights with a multi-faceted cast that possesses a knack for expressing classic British humor.