Grease! by T S. at InsiderPages
Where else can you pick up a burger, burrito, and beer at 3 AM? If you said Denny's you are wrong... they don't have burritos. This place is grease heaven. You really feel like you are eating in a commercialized version of a Mexico taco stand. It is so authentic that it even comes with a B rating and barely-understandable English. It is cheap and has a great selection of food. It is open 24 hours a day. My pick is the breakfast burrito dipped in TK's fresh salsa.
Read more at losangeles.citysearch.com
PROS: authenticity, hours, variety