If this set contained all 22 episodes of the first season, I'd give it five stars without hesitation. However, what you get is 5 discs with 4 episodes each ("Sandkings" is a two part episode, so you get 19 episodes total).
As annoying as it is to have less than half the episodes, it's still more than what you get in the States. A couple of years ago, MGM released two discs, each with six episodes, using a "theme" approach. How 20th century of them... Every other show, including the original Outer Limits, is being issued in this cherry-picking fashion.
In June 2005 MGM released another four discs of "themed" collections, and now offers them in a box set along with the earlier two releases. That's 30 episodes out of seven seasons' worth.
As for extras, none to speak of.
The Canadian box also features optional Dolby Digital 5.1 sound, which is not available on the U.S. releases. Also, you hear the control voice say "Please stand by" after the intro, which is not on the U.S. versions (if memory serves). This was added to the commercial editions of the episodes but was left off when they originally aired on Showtime without commercial breaks.
Between this box, and the Canadian Season 3 box (still incomplete, with only 18 episodes from the third season), and the six US discs, there are only four episodes in common, so you're not throwing your money away by buying both.
Of course, you can decide to save your money and wait for a complete release ... or you can say "c'est la vie" and watch them now. It's a real treat for me as I missed most of these, and as this is one of my favorite shows I enjoy watching the ones I saw once or twice before.
And the more people that buy the series, the more there's a slight chance MGM might wake up and release everything. But you never know...