I went to a Sephora store in California and fell in love, unfortunately there were no stores in Oklahoma...until now! I went to the store last weekend and it was awesome! They have open testers of ALL the products for you to try before you buy. I like going to the perfume section and trying some nice (expensive) perfumes (which I will review later). They have disposable applicators that you use when wanting to apply some makeup so you don't have to use the one it comes with.
However, unlike the store in California they do not offer free vial perfume samples at request, you must make a purchase for free samples (but they are very nice). Also the store isn't as extensive at the website. I was looking for a certain fragrance line and they did not carry it in the store but they have it online.
And one last note for people living in Oklahoma, it seems that there is only ONE sephora store in the state and it is located here in the Penn Square Mall in Oklahoma city.
Note: If you are unfamiliar with Sephora, they do carry high end prestigious brands (like Prada, Chanel, Armani, etc) but such brands come with a high price.