How much experience do you need in a language before you can put it on your resume? There is one language I'm in proficient in (Java) which I would definitely put on the resume but say I took I couple of semester courses in college which involved extensive programming in C or self-taught myself C# but have written no meaningful projects in it, can I put those languages on the resume without having the employer laugh at it or perceive it as resume inflation?
You can always list languages (as well as other skills) in tiers on a resume:
Proficient: Java, Lisp Familiar with: Perl, C++
As a guy looking at a resume, I will appreciate both the honesty and the effort; and when bringing you in the first question you usually get asked is to rate your individual language proficiency more precisely, orally or on paper.
I include any language which I have used as a professional; i.e. any language I used while paid to write in it. And I don't list competance levels. A resume is an introduction; If I say "Computer languages: Algol, Basic, C, C++, Cobol, Fiemaker, Fortran, and Foxpro", it's up to the interviewer to ask "Just how much Algol do you know?" Probably more than any other person he's ever interviewed. It's sort of a list of discussion topics, not an expertise claim.
I find that the more technologies a candidate lists on their resume - the less they actually know!
Knowledge of specific technologies is important but experience and knowledge of methodologies is more important.
I would focus on communicating your experience (while mentioning the technology used), and what you know about how software is developed, rather than making lists of technologies and assigning arbitrary levels to them (beginner, intermediate, etc.).
To answer your question - don't list any. Or, list only those that are mentioned in your experience.