Gloria Jean's is just off of Hamra Street. It has, by far, the best study/work atmosphere. Everyone has his or her nose buried into a book or laptop. Sometimes it feels like you're walking into a library, and when you speak people actually look up at you with a look that says "how inconsiderate". So if you're looking for a place to concentrate without any major distractions, my recommendation is Gloria Jean's!
The coffee itself is not bad. I like the Creme Brulee drink, which is ice blended, it really does taste like Creme Brulee. I also like their Caramellate if you're looking for a cold drink. Theis Espresso is not bad for a quick caffeine fix. I honestly haven't explored their drinks any more than that, because a lot of their forzen drinks were too fruity for me (I can't stand fruit tastes in my drinks) so that would be interesting for fruit lovers, and their hot drinks are very standard.
They have quite a big seating area indoors, and it's a non-smoking area. They do have a smoking area outdoors, but it consists of about 7 tables and they're usually full, so it's a hassle getting a table outdoors.
They do have free Wi-Fi, but I suggest you use it on your phones, because it works a lot faster. Once, it took about 17 minutes just to load Wordpress. This is probably because 99% of the people at Gloria Jean's are using the internet. If you're patient, go ahead and use you're laptops, but if you're like me, use your phones!
Also, the service there is great. The people that work there are very friendly, they actually make you want to come back.
They also offer a Gloria Jean's card, where you get a hole punched into your card every time you buy a drink, and after buying 10 drinks you get a free one.
Last, but definitely not least, the desserts. To all those Sugar Daddy's fans out there who can't be bothered to drive to the bakery, just take a walk down to Gloria Jean's. They get their desserts from Sugar Daddy's, and even have my favorite: Red Velvet Cake... yum.