Yeah, sadly there is no pilot episode. Instead, the intro takes the place of the backstory for the series.
There are good and bad (and worse) episodes. It stays fairly cheesy, but it has a great almost self-mocking tone for a lot of the humor. I can recommend some of my favorite episodes though, if you want to take a look at them. Episode 1 is not one of my favorites.
Episode 3, Happy Egg Day to You. Episode 15, For the Love of Teryx. Episode 28, Beach Blanket Bonehead. Episode 52, Those Reptilon Nights.
There are plenty more good ones, but those are my favorite episodes. ^_^ Enjoy!