Presidential hopefuls George W. Bush and Al Gore have taped segments for Saturday Night Live's "Presidential Bash 2000," to air Nov. 5.... World Wrestling Federation heavyweight champion The Rock will guest star as himself on the new NBC comedy DAG on Tuesday, Nov. 28.... UPN's Girlfriends and FOX's Titus have received full-season orders from their respective networks.... Regis Philbin will make a special appearance on CNBC's Squawk Box on Monday as the popular financial show kicks off its fifth Anniversary. As part of the celebration, producers are sending its hosts on the road for a "Wall Street to Main Street Tour." — Michael Ausiello