The Mystery Science Theater 3000 presentation contains examples of:
Dreadful Musician: Gypsy puts on a performance that consists of her repeatedly bellowing the words "LAST NIGHT!" and slamming her face into a lyre.
Genius Bonus: invoked At the title, Servo starts singing, "Oh, Hercules, my darling..."note "Unchained Melody", geddit?
The Hedonist: The entire crew in the second host segment, though Joel complains about having to be the one who peels the grapes.
It's Been Done: By Steve Allen, no less; Joel invents the Steve-O-Meter which detects whether a given idea has already been thought of by Steve Allen. Turns out Steve already thought of the Steve-O-Meter too.
Love Potion: In parody of the film's Waters Of Forgetfulness, Joel and the 'bots partake of the (Bottled) Water Of Forgetfulness, the Carob Shake Of Pretentiousness, the Dairy Queen Blizzard Of Loneliness (I found a quartah!), the Fruit Stripe Gum Of Stability, and the Green Bean And French Onion Casserole Of Happiness.