Goodies:
The vibrantly-mohawked Nigel is located in several places throughout the game and he can sell you call kinds of unlockable items (art, strip games, etc). Post-makeover-Russell can do the same for you as well, though, later on in the game.
Porn Fairy:
This takes a keen eye but in several places there will be a magazine on the ground with no special actions. Check it in order to get the porn fairy who will say something then leave with a parting gift such as a rare item or multiple secret tokens. The fairy is also found outside of Larry