Yo, you know that Lipton Brisk Iced Tea commercial you saw during the NBA Playoffs? That was a miniature latex puppet of Rocky Balboa, complete with the real Sylvester Stallone’s voice. The ad — a follow-up to last year’s Frank Sinatra spot — is one of Stallone’s rare commercial appearances (in addition to a voice-over for Pontiac, he’s done ads abroad). Taping for an hour in a Miami studio in late winter, ”[Stallone] totally came back into his role,” says Lipton brand manager Gary Yoshioka. He’d better have. The actor, says an advertising source, was paid close to $1 million to participate. With three lines of dialogue, that averages $50,000 a word, not including grunts. It sure does make up for taking scale in Cop Land.