I'll admit it: I'm a numbers guy. It's part of my nature at this point. After years of creating and analyzing reports, I don't think I could help it if I tried. So rather than shun this fact, I embrace it wholeheartedly. But being that I create reports for upper management, I'm also aware of the necessity to keep report meaningful.
That said, I have to go on record and say that I kind of hate in-game damage meters. It's like you're seeing one small piece of this really huge pie. Hey! That rogue did the most damage; he must be the best. It's like only looking at the revenue of a company's profit and loss statements. Oh great! This company is making millions of dollars! Of course, they're spending billions, so they're really deep in the hole, but who cares, right?
Enter Wow Web Stats. This tool gives an amazingly detailed and useful tool in analyzing your raid or group. You can sort the stats in many different ways. You can see individual players and down to the level of each spell. How much does that Fireball crit for in one night? How is the healer's HPS? Who over-healed the most? Which mage was removing more curses? The stats just go on and on. It really provides more of a true picture than just who was the top 3 on the meters.
It's really quite easy to set up and do. You simply type /combatlog while in game. (Note: each time you want a new combat log, you have to manually delete the old one.) Wow will tell you where the combat log is being generated. (Wow folder/logs if I remember correctly.) Once you're finished, you can type /combatlog again, and then get to work creating your report. You can even have multiple people gathering data and combine it in one report for increased accuracy. All the details of what to do and how to create the report can be found over at the WWS site. You can also see an example of how a report looks.
Just a really amazing tool to help you see the big picture.