SEASON PREMIERE: The premise of this show is simple: amateur magicians perform their bits of business in front of, and sometimes with the involvement of, master illusionists Penn Gillette and Teller. If Penn & Teller are impressed, so are we. It’s a basic idea, but always fun because of the hosts, who also serve up some enjoyable tricks of their own. Last year, Fool Us seemed like a one-off summer series, but it fooled us. Presto: It’s back!