Why (and how!) six weeks?

My employeer -- eBay -- has a terrific employee benefit: after 5 years employment, employees are encouraged to take a 1 month paid Sabbatical! Further, the Sabbatical can be be extended by using available vacation time. My 5 year anniversary with eBay was in August 2009, and I'm planning to combine the Sabbatical break with 2 weeks of vacation time, for a total of 6 weeks. It's great to have an extended block of time, opens up all kinds of possibilities -- hardest choice may be exactly WHAT to do!