Beware the Suited Men Wielding Letter Openers.

Years before ''Everybody Loves Raymond'' propelled Brad Garrett to stardom, he was a stand-up comedian opening for Frank Sinatra in Las Vegas. He capped his warm-up act on one particularly unresponsive night by deadpanning: ''You're a great audience. Stick around for Frank.'' The Acting Company's forceful, fine-boned revival of ''Julius Caesar,'' a co-production with the Guthrie Theater playing at the Baruch Performing Arts Center, evokes this memory as its Brutus (William Sturdivant) concludes his logically airtight but dry funeral oration with, ''I do entreat you, not a man depart,/Save I alone, till Antony have spoke.'' [ABSTRACT FROM AUTHOR]