Ok, Resume t-shirts are a terribly clever idea but I wouldn't recommend wearing them to the interview.
This post won't be a terribly tedious and comprehensive guide on writing resumes but rather some little things I've noticed from reviewing the countless thousands that I have.
Proofreading! ( or a lack thereof) - This is one of the worst yet most common mistakes there are. Misspellings, grammtical errors, missing words are some disheartening things for interviewers to see - EVERY job requires writing in some capacity and knowing at least how to put a sentence together can demonstrate a level of professionalism and general awareness necessary for any job.
Bad email addresses - Some people tend to forget that their flashy/raunchy email address can make for an odd impression when the employer is skimming the resume. Flashy-raunchy is different from funny or obscure; an email address that shows a little personality (fishingparadise@, kingofbasketball@, squintingsquid@...) is fine and might make you a bit more memorable. But if you can't tell, try typing the address into a search engine (or the image search if you're brave enough); if you don't like what comes up, change the address!
Formatting - A resume should be easy to read, interesting to read and organized. If the amount of words, lines, pictures or what not compromise these ideals, it's time to change the resume. The one page rule only applies if it's practical - try to avoid using incredibly tiny or narrow fonts, shortening the space between the lines, or cropping all of the margins to make the one page rule work. Oh, and having the amount of work experience that one gains beyond the college years negates that rule.
Formatting (Consistency) - This mainly refers to proper alignment of like topics, dates for all relevant matters, bullet points, headings, fonts and spacing. Basically, you want to have a resume that's aesthetically pleasing and not sloppy. I find that having two or more people take a look at the resume and give a first impression helps tremendously.
Here are a few links that are great for cleaning up a resume and/or writing skills in general:
20 Most Common Grammatical Errors - this is a great refresher in basic grammar.
Common Words That Sound Alike - the its/it's, there/they're/their etc. site; some of the MOST COMMON problems I see.
Punctuation - The University of Ottawa also has this site on correct punctuation usage.
Hip Email Addresses Bad For Resumes - MSNBC sheds some light on the matter.
As for video resumes and maybe some good laughs, check out this site that hosts both helpful hints and woefully hilarious transgressions.
