Oh yes, Flash Gordon would be a great addition to your collection.  The movie is a bit silly, but it is very entertaining.  Definitely worth seeing.

Here's the version I have..I found it on sale last year, I think at Amazon.  There aren't many extras, but I'm still glad I got it.

I'm a Baaa-aad Boy! I peaked!  Sounds like the movie I fell asleep on in High School!  But don't worry... I would still give it another try!

It's on sale again at Amazon.  Here's a link and everything. 

http://www.amazon.com/Flash-Gordon-Saviour-Universe-Jones/dp/B000PMGS8G/ref=sr_1_1?ie=UTF8&s=dvd&qid=1243370562&sr=1

hmmmm... not sure I would call $15 on a $20 DVD much of a sale. I will probably wait till it is under $10 before I pick it up. (preferably quite a bit below).

Flash Gordon is certainly a Guilty Pleasure but as such worth watching.

Marketplace is your friend in those case where you are not sure.
New = $9.40
Used = $6.75

The Adventures of Captain Marvel
Considered by many to be the finest serial ever made, The Adventures of Captain Marvel chronicles the exploits of "The World's Mightiest Mortal" as he combats The Scorpion, a hooded villain intent on obtaining six optical lenses that, when aligned properly, turn ordinary stones into gold! Highlighting the serial were the fabulous flying sequences by Republic's ace special effects team, Howard and Theodore Lydecker. Combining a wired dummy photographed against real backgrounds in natural sunlight, with spectacular take-ff leaps and landings supplied by action ace, David Sharpe, the final effects are still as fascinating today as they were in 1941. The Adventures of Captain Marvel marked the very first time a comic book superhero's exploits were transferred to the silver screen, and the resulting 12 chapters have yet to be equaled for excitement and entertainment.

Chapter 3: Time Bomb
Betty is kidnapped by the Scorpion's henchmen and sent adrift in a driverless vehicle

My Thoughts:
Another good chapter with a great cliffhanger. One thing I could never understand about these superhero shows. One of the bad guys are shooting at Captain Marvel... and the bullets just bounce off him... just like they do on Superman. But yet right after bullets bouncing off him... the same bad guy breaks a chair over his head and he stumbles backwards and is knocked out. Oh well... these shows are not perfect... but they are a lot of fun.

The Adventures of Captain Marvel
Considered by many to be the finest serial ever made, The Adventures of Captain Marvel chronicles the exploits of "The World's Mightiest Mortal" as he combats The Scorpion, a hooded villain intent on obtaining six optical lenses that, when aligned properly, turn ordinary stones into gold! Highlighting the serial were the fabulous flying sequences by Republic's ace special effects team, Howard and Theodore Lydecker. Combining a wired dummy photographed against real backgrounds in natural sunlight, with spectacular take-ff leaps and landings supplied by action ace, David Sharpe, the final effects are still as fascinating today as they were in 1941. The Adventures of Captain Marvel marked the very first time a comic book superhero's exploits were transferred to the silver screen, and the resulting 12 chapters have yet to be equaled for excitement and entertainment.

Chapter 4: Death Takes the Wheel
Billy Batson is held captive in an Oriental henchman's vault. The Scorpion didn't count on Captain Marvel ruining his plans.

My Thoughts:
This is a good chapter... but not as good as some of the others. Pretty much this whole chapter felt more like filler to me then anything else. The cliffhanger for this one is only OK... it is just a "Will Captain Marvel get there in time?" cliffhanger. I haven't mentioned anything on the quality of this dvd yet... it is impressively good. only minor problems with the image here and there... and very good sound. Over all it is very crisp and clear. They did a good job remastering this serial.