I have to disagree. Brevity is always good, but what you're really after is getting across the message that you have the skills and experience for the job you're applying for.
All of my job titles have been some play on "Software Developer" which, as mentioned previously, is actually not very helpful. Linux side? Windows? Web? Mobile? Specialist at small sites or ones running on 100+ machines? Generalist? Have I worked on a team before? Led them? Hate them? Am I a toe-shoe wearer?
My resume is two pages in length and gives a one-sentence description of all major projects I've worked on. As a result, the employer A) gains confidence that I have done specific work in the area, and B) they get a feel for the sort of thing I like to do. (In my case, 3-30 person development projects where I architect or lead.)
Point B) is more implicit than explicit, but is extremely important. You'll often hear from employers that they reject candidates not because they lack experience but because they feel somebody wasn't going to be a good cultural fit for their office place. If you soothe their anxiety by having worked on projects X, Y and Z with a team of 4, 12 and 7, you go a long way towards helping them think, "Yeah, this guy does have a track record of the kind of small team work we do. Yeah. YEAH! Let's hire him and bake him a cake."
I also actually provided my resume to AreaCode707 a few years ago for her to critique. In its heavily revised form, I've gotten a number of compliments on it from recruiters, and easily make it to the interview stage via it. I particularly remember debating the use of a "Summary"/"Objective" section, which I ended up including, and have gotten only positive feedback on it as well.
This is true as well. I got a couple of highly regarded people to give me high praise to their managers, which in turn led to job interviews.
What does listing the 10th major project add to your resume that wasn't already there by the 8th? The 5th? The 3rd?
Why give examples of teams of 5, 7, 12, when you can just list one?
I'm leading a resume/interview training program right now that gets people jobs from my alma mater in a very competitive industry.
Typical industry applicant -> offer rates at a firm are about 0.5-1%. Interview -> offer rates are about 5-8%.
Compare that to the people we work with where 80% get at least one offer. And they ALL have a 1-page resume. Yes, they have all left things out, but they all bring up the best examples of things that aren't on their resume when they are in the interview.
Fit is something that comes from the interview for sure. After all, fit is a 2-way street, and the applicant has to walk in to the building and meet the people in order to understand whether there is a fit for them as well.
I should back off of my "1 page only, ever" statement because there are examples of industries where more may be necessary, but my statement does apply in general - if you have to ask, the answer is 1 page. If you KNOW that 2 pages is what it takes, then go with 2.
What's more, a lot can be done with the formatting to fit things on to 1 page.
-Decrease the margins until they are as small as you can get while still printing on the vast majority of printers.
-Reducing the font size (it should still be readable though)
-Cramming your name and contact info at the top in fairly small type (ie, no 16pt bold name at the top)
-Wordsmithing so those 3-line bullet points fit exactly into 2 lines
-Removing redundant information and examples that don't add anything not already covered by previous examples
-Removing the "objective" line as it should be in the posting you are applying to, or in your cover letter