Sometimes comic timing can save the day. A ragtag romp about a duo of Valley guys who embark on time travels through history to help bring order to a world gone mad, Stephen Herek’s Bill and Ted’s Excellent Adventure (B+) shouldn’t be as charming as it is. Keanu Reeves and Alex Winter are gleefully goofy as the likable leads whose superficial encounters via a phone booth travel vessel with the likes of Abraham Lincoln and Socrates (their pronunciation of his name rhymes with “no gates”) provide funny fish out of water vignettes. George Carlin is amusing as the buddies’ temporal concierge. The effects are cheap and some of the laughs really obvious, but it’s mainly gleeful fun, like a feature-length crowd surf. There are many more triumphant films in this genre, but the movie’s distinctively dense leads help it coast into cult status.