Reformatting XP. How much to Partition?

I'm reformatting with a brand new 250gb Hard Drive.  How much space should I partition?  I plan to use my PC to play War III, WoW, and I'm getting into Video Editing.  I also have an ATI TV Wonder, as I plan to record some console games onto my PC.  One guy recommended I partition for 4gb.  Then another one said 180gb.  He said:

"there is an active partition, and a non-active partition
besides that, there are two types of partitions:
Primary Partition (Standard, encouraged), Extended Partition (Linux mainly, boosts performance)"

So uhh... who do I listen to?

I was told you can only have one partition per drive