I kind of wanted to see Limitless a good long time ago, because of how I like Bradley Cooper and the plot seemed cool in a wish-fulfillment kind of way, but I never did. Then recently CBS released a show about it, which I did watch, and it turned out a) to be good (and more importantly, fun) but also b) a sequel to the movie rather than a reimagining of it. So at that point, I had to watch it. Which I have!
And, yeah. Wish fulfillment is the name of the game. You just take this pill, and suddenly you can remember everything you’ve ever seen or learned, not to mention how easy it becomes to learn new things and make new connections. And the downsides are… well, fairly minimal. From there, high stakes cats and mice, criminal enterprises, stock markets, genius books that capture the public imagination: you know, the kinds of things people would do if they had, er, limitless potential.
Recommended to people who like brain wish-fulfillment or Bradley Cooper. Not recommended to people who like Wars on Drugs. Oh, and the show is definitely better, if for some reason you feel a need to choose between them.
 There are more realistic downsides in the show, which is early on often a remake of the movie after all, but smarter.