It is a constant source of amazement to me that Last Man On Earth has not enjoyed a renaissance amongst the horror community, as one is greatly over due!
This film, pure and simple, is a classic! Now you won't get many reviewers, either professional or amataur, putting their name to such a claim. This, possibly, is because people don't want to look unknowledgable: to go against the status quo in either direction (eg, to claim 2001 was cack [no I don't think it is, incidentally], or to say LMOE is great) ivites derision from a staid and unyielding mind set.
It may be said that the lack of budget shows through, or other similar trifles may be focussed on, but in the end LMOE is a pioneering example of the genre, from it's european style of filming, which lends to the film a refreshing 'otherness' and not a little grace, to the lack of any romantic counterpart for the title character, to the unrelenting emotional rawness and downbeat finale.
A few years later another film came out, one that was eventually hailed as a classic despite its minor faults. Upon viewing that film and LMOE one could easily draw the conclusion that LMOE pre-empted most of the points that granted the later flick classic status. The newer film was Night Of The Living Dead. Go watch them side by side and you'll see what I mean.
Perhaps with the Will Smith version of this tale doing well at the box office LMOE will finally recieve the attention it so richly deserves.