O2 isn't really a restaurant... it isn't really a bar.

It's a melange as eccentric as its creator, Woody Harrelson, actor, avowed hemp activist, vegetarian and star of "Cheers," "White Men Can't Jump," and "The People vs. Larry Flynt."

It's the sort of place tourists from Iowa might expect to find in Hollyweird, but rarely do.

First and foremost, O2 is an "oxygen bar." No booze is served. And no caffeine. Just oxygen.

That's right - air. You get it served up from tanks, via hookahs (water pipes.) at a cost of $13 a pop. You can get flavored oxygen for an additional $2 (per 20-minute hit.)

Not eccentric enough for you? The upholstered booths and the drapes are made out of hemp. The chairs are cobalt blue.

Still not quite far out enough? The small restaurant at O2 doesn't serve meat... or dairy... or anything cooked. That's right, we're talking strictly raw vegan fare here. In their pasta dishes, the noodles are made from sliced zucchini. There are lots of salads, freshly squeezed juices, hemp burgers... you get the idea.

The L.A. Times restaurant critic wasn't crazy about a lot of what is served here (he described it as "Flintstones" food), but he somewhat grudgingly recommended the fresh juices, magic mushrooms, Chinese spinach salad, pyramid, falafel, and menage a torte. He also said to avoid the "kuan yin" salad, the "Yoda's wish" pizza, and that hemp burger.

Prices (for food) are reasonable, especially for a Sunset Strip location; expect to pay about $30-$45 for dinner for two.

There is dancing & music on Fridays and Saturdays (live music before midnight, DJ's after.)

And on the bright side, O2 offers a healthy alternative to the alcohol & drugs scene on the late-night Strip. And no one's going to be busted for DUI driving home from this bar.

The restaurant's motto? "Eat - Drink - Breathe - Love"

O2 is open from 11 a.m. to midnight Tuesday-Thursday, and stays open until 4 a.m. on Friday and Saturday. It's closed on Sundays and Mondays.

Getting there: O2 is located on the south side of the Sunset Strip, right across the street from Spago.