When I lived in NM you could get green/red chili on a burger, not sure if they still do that but you cant get that anyplace else in the Country.
I loved McD's back in the 70's and early 80's but their quality has gone WAY down since then. Their breakfast is tolerable most of the time and for whatever reason their fries always did rock. That being said I dont go there unless I'm "backed up" and cant find a taco bell...