If you're considering this boxed set, then likely you've already seen the show. There's a lot written about the plot, characters and cast, so I thought I'd take some time to review the Bonus Disk in this set.
Disk 5 - in the same case as Disk 4 - contains Bonus Features. All of which are explained below :
Fashion Extras - This is a behind the scenes feature with the fashion consultants for the show. It shows them shopping for each characters wardrobe and includes a fitting session with Erin Daniels (Dana).
Puppet Movie - This is actually worth the price of the set. It's a terrifically funny "mouth puppet" presentation by some of the cast. It includes a recap of several scenes and show an appreciation of a cast that does not take itself too seriously. My particular favorite part is towards the end, where we see their trailers. I laughed out loud. This is a keeper.
The L Word Defined - Basically the extended promo that appeared on Showtime. There's a lot here about how the L Word is NOT the Lesbian Queer As Folk. To quote Guin Turner, the L Word has "a lot less drugs and a lot less dancing". You have to love her for that. We'll excuse the fact that QAF does feature two pretty fabulous lesbians.
Wardrobe Closet - This is just a still photo gallery with information on each character that also directs you to a website for more information. Do we need more information on their clothes? Um, anyone? Painfully, there is no background soundtrack on this feature.
Season 2 Sneak Peak - Just that, a montage of snippets from upcoming Season 2 episodes. Lots of teasers and glimpses of guest stars.
Power-Up Panel - This is a moderator lead panel discussion featuring some of the cast, producers and Showtime execs talking about the show. Power-Up is a professional organization for lesbians and women in the Entertainment, Arts and Media fields. You can check out their website. This is an interesting feature, though the camera work is shakey.
Fan Mail - Well, its basically... fan mail. Yes, you read that right, this is still pictures of women who wrote in praising the show, and typed out versions of their letters. Again, painfully, there is no background sound track. I guess it's cool for the women featured, but otherwise, I was sort of bored.
Biographies - Again with the still picture (would putting in clips have been so difficult) and a type written bio on each featured actress/actor. Again no background music or soundtrack. You can get this information anywhere, and incase you didn't know... Jennifer Beals was in a quiet little film called "Flashdance" before starring in The L Word.
Photo Gallery - Finally, some music! This is stills from the show, cast and crew, edited to music. Some you've probably seen already, from the Showtime website.
Previews - No, not of the L-Word but of other Showtime programs: "Fat Actress" and "Queer As Folk" (dvds).
Promotions - Well, at least they tell you what you're getting. Basically, commercials.
Though I've read several descriptions indicating a gag/blooper reel. I was not able to find out. It's possible that it's hidden, read "as an Easter Egg", but I haven't been able to locate it yet.
Hope this was helpful. Enjoy your set.