As a counterpoint to the fine folks at Kamikaze Cookery, I've just cooked one of Gordon Ramsey's recipes0. It went without a hitch and tasted bloody great. Admittedly, it was only a hot & sour soup and had been featured on the haunted fishtank, so I doubt it counts. Plus, I already know how to cook, which is a point in my favour. But anyway. I cooked someone else's recipe and it worked beautifully. Omnomnomnom.
0: The actual recipe is indeed online, and is so simple that I could teach an avocado to cook it1.
1: I've been reading the Waid/Kitson