All online casinos listed here have fantastic blackjack and slots.

also has sub-pages for blackjack games and online slots in the menu if you scroll down the page.

I wouldnt reccomend playing blackjack or slots online. The difference between them and poker, or even sports books is that in slots and blackjack you are playing against the house. You have no way of knowing if you are being cheated or not. They also dont really have to be regulated because they are illegal to be based out of the US any way. I would stick to games where you play against other players while gambling online so you know at least the house isnt benefitting from it.