Boulevard, yes. Especially smokestacks (if you see Bourbon Barrel Quad, buy it).
If you like lambic, and geueze, try to get to Gomers in Lee's Summit, they have a lot (tons of imports in general including absurd amounts of Mikkeler).
Since you are from Argentina I assume a lot is new?
Try anything from Founders, Bell's Expedition, anything from Lagunitus. There is lots of good stuff. I recommend calling Gomers in Lee's Summit and asking when Aaron is working and going there to have him help you out. He is the best in town, hands down. Bring money, I never walk out of this place less than a few hundred lighter.
If you want to hit a bar:
Flying Saucer in the Power and Light District has the best selection.
Waldo Pizza in Waldo has the best bartenders
Swagger in Waldo is cool
If you can make it out to Lawrence, KS (35 minutes from downtown KC), Free State is one of the best brewpubs in the country.