Gaps in employment are obviously noticeable, but don't fret too much about it because it's almost the norm in this economy. List what you've been doing on your time off if the activities are relevant to the position. Here are more ideas on how to fill the resume gaps.

"Increased quarter one revenue by nine percent year over year" sounds a lot better than "increased revenue for the company." A resume is always more compelling if you can back your achievements up with quantitative data.