I'm interested in playing some games with our very young (16 months) son.
I think he's a little young for most things yet - I'm familiar with Old Maid, Dominoes, and similar games that involve a little bit of matching; those seem like they will be good points of entry for him shortly. Marbles, while also great, involves tiny pieces that can be swallowed.
I want to avoid games like Candyland and probably even Chutes and Ladders - they annoy me. :-) Other games with a lot of cards or paper products involved are probably right out - they'll get slobbered on or destroyed. Small parts get eaten.
What are some concrete, not commonly known games that might be interesting to him?