A really drinkable tripel, i.e not super-strong is Tripel Karmeliet, spicy and a bit sweet. A good almost everday beer.
Hey guys I had a chance to sample a few Dubbels last week,
Here's a few of my recommendations. Gouden Carolus is my favorite, kind of epitomizes everything I like in strong/dark Belgian beers -- tastes a bit caramel, high alcohol content, loads of flavor to mask the high alcohol content. Westmalle Tripel is another one in this vein.
But there is a lot out there depending on your taste. Cantillon makes some nice lambics -- they are quite sweet (but acidic), it's more like wine than beer in my opinion.
Sorry, the computer cut me off before I could tell ya aboot this. Duchesse De Bourgogne is a really aromatic, complex Belgian that would make a fantastic after-dinner beer. If strong tastes are new to you, consider splitting a bottle with someone. Two of the first smells that hit you are vinegar and cherries among others. I have not tasted another beer like this. Bonus cool: I was introduced to this at Stumptown Coffee (yes, they sell beer, also).
The Abbaye de Floreffe also produces a fine family of beers, including wonderful Trippels and Quadruples, velvety-smooth but strong, beware! (The Quadruple may not be produced any longer).