Some good gateway games for your consideration:
Board games:
- Small world (nice fantasy elements, good fun)
- Revolution (SJGames)
Card Games:
- Lord of the Fries (Zombie + fast food + poker)
- Munchkin
- Ninja Burger (card game)
- Aye, Dark overlord. (Needs GM)
Collaborative storytelling:
-
The adventures of baron MunchausenRoleplaying:
- Werewolf/Mafia (quintessential RPG gateway) GM required
- Ninja Burger (RPG)
- Dogs in the vineyard
- [urlhttp://www.onesevendesign.com/ladyblackbird/]Lady Blackbird[/url]
- Dragon Age RPG (for the gamers)
- A penny for my thought (Evil Hat - Rather dark game)