Surprisingly believable! It's a cliched scenario, but the game knows and plays on this. Not only are your actions far-ranging but the reactions of your director make him an unexpectedly deft NPC. Minor touches of weirdness (the "Reefer Madness" reference warranted a chuckle) add to matters.
Here's the list of actions.
(Spoiler - click to show)Before looking at the list below, try looking at the director's notepad. It'll have a suggested move on it, which may help you find more. You can look at what you've done so far with SCORE.
Be aware that repeating some commands will have amusing results, so it's worth trying things multiple times.
(Spoiler - click to show)
--open window, wait, ask for a hint, call 911
--look at the camera, examine the magnet, read the magazine, examine backpack
--request the score, tell a joke, undo, swear
--make a body noise, examine the boom mike, grab chest, live
--open the fridge, any unparseable command, jump, restart
--examine the brochure, quit, eat apple, coughing
--go in any direction, cry, sleep, lick the ashtray
--think, pray, sing, eat chocolate
--eat the paper, phone LifeCall, wake up, take or drink the beer
--smoke, say XYZZY, examine your wallet, take the gum
--die
--press enter (as in, literally press the enter key on your keyboard, with no text. Heh.)