Knight of the Phoenix, Parts 1 & 2
Deadly Maneuvers
Good Day at White Rock
Slammin' Sammy's Stunt Show Spectacular
Just My Bill
Not a Drop to Drink
No Big Thing
Trust Doesn't Rust
Inside Out
The Final Verdict
A Plush Ride
Forget Me Not
Hearts of Stone
Give Me Liberty ... or Give Me Death
The Topaz Connection
A Nice, Indecent Little Town
Chariot of Gold
White Bird
Knight Moves
Nobody Does It Better
Short Notice

I got the collection for Christmas, thank you to my beautiful wife!!!

Goliath, Parts 1 & 2
Brother's Keeper
Merchants of Death
Blind Spot
Return to Cadiz
KITT the Cat
Custom KITT
Soul Survivor
Ring of Fire
Knightmares
Silent Knight
A Knight in Shining Armor
Diamonds Aren't a Girl's Best Friend
White-Line Warriors
Race for Life
Speed Demons
Goliath Returns, Parts 1 & 2
A Good Knight's Work
Mouth of the Snake, Part 1 & 2
Let It Be Me
Big Iron

I got this collection in a 2 for 1 sale at Best Buy, with season 4.

Knight of the Drones, Part 1 & 2
The Ice Bandits
Knights of the Fast Lane
Halloween Knight
KITT vs. KARR
The Rotten Apples
Knight in Disgrace
Dead of Knight
Lost Knight
Knight of the Chameleon
Custom Made Killer
Knight by a Nose
Junk Yard Dog
Buy Out
Knightlines
The Nineteenth Hole
Knight and Knerd
Ten Wheel Trouble
Knight in Retreat
Knight Strike
Circus Knights

I got this collection in a 2 for 1 sale at Best Buy, with season 3.

Knight of the Juggernaut, Parts 1 & 2
KITTnap
Sky Knight
Burial Ground
The Wrong Crowd
Knight Sting
Many Happy Returns
Knight Racer
Knight Behind Bars
Knight Song
The Scent of Roses
Killer KITT
Out of the Woods
Deadly Knightshade
Redemption of a Champion
Knight of a Thousand Devils
Hills of Fire
Knight Flight to Freedom
Fright Knight
Knight of the Rising Sun
Voo Doo Knight

I own season 4, FINALLY!
NOW, I need some time to watch them all!! LOL