Following on from our recent Jane Lynch / Desperate Housewives posting – here’s another Guest Starring moment!

Nowadays he’s one of Hollywood’s hottest young stars (though perhaps a tad less hot after the lukewarm reception of Charlie St Cloud) – but a few years back teen dream Zac Efron was just another young actor guest starring on popular TV series…

Yep, before the High School Musical movies made him a household name, Zac paid his dues on several popular TV shows of the time…

And here he is in 2003 in ER, playing a shooting victim treated by Abby (Maura Tierney). Zac would have been 15 years old when this episode aired… gosh it’s good to see the likes of Alex Kingston and Paul McCrane back in those hospital scrubs…

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But ER wasn’t Zac’s only early TV appearance… check Efron out two years later on CSI Miami (Zac turns up around the 1 minute mark), playing the son of a possible suspect who may or may not be guilty himself…

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Not much to say on the acting fronts here – then as now, Zac is professional and solid – but still hasn’t been given the chance to really shine on the big or small screens. It’ll be a while before we can tell if he’s a substantial actor (like a Johnny, a Leo or a Heath Ledger) or a pretty but unremarkable face…

Still considering how good looking Zac is these days it’s good to know he also went through those gawky teen years we all endure!

But what do you think? Do you think Zac will go on to have a long running movie career? Or will he be back on TV in another show within the next five years? Start weighing in…