Today, the first “High School Musical” movie turns 10 years old. You can’t say it’s too early to tell if its Abercrombie-and-abs male lead, one Zac Efron — the costar of this weekend's "Dirty Grandpa," in which he parties with Robert De Niro — is secretly a talented thespian. After all, he’s been in the game the 1989 TV movie “Triple Play.” He should have figured what he can do out by now — or at the very least we should have what we think about him figured out.
And yet it’s still hard to tell. This much we do know: When he’s making fun of himself and his bro-ish stature, he’s very good. When he popped up as a Pabst-crushing, devious frat lord in “Neighbors,” it was seen as a revelation. Not only did he prove a fine, smarmy foil to Seth Rogan’s discombobulating young dad, but he quietly telegraphed a real panic: Maybe boozing through college was his peak. Maybe he can do nothing but take his shirt off. You could even sense the real Efron freaking out underneath his perfectly sculpted figure and six-pack abs.