2501 University Blvd., NE
all damned night!
Pretty much the De Facto 24 hour joint in ABQ, so much so that you can tell how long someone's been living here by how tired they are at eating there. The food is fairly standard "Southwestern" fare (lots of menu items require choosing between Red and Green Chile), with the occasional desultory burger or odd breakfast sandwich thrown in for good measure. My personal suggestion for taste/price ratio: the Chicken Nachos.
The real draw of the Frontier, though, is the decor: it looks like an aging cowboy blew his memories all over the walls with a shotgun. There is more John Wayne per square foot than I've ever seen anywhere else. Be sure to not miss the portrait of The Duke done entirely in nails in Room 2.