Factual error: Lisbon is sending Van Pelt to El Oro State Forest. Van Pelt says, "El Oro State Forest, that's east of Lake Tahoe, right?" Lisbon says, "Yeah." East of Lake Tahoe is Nevada, not California. (00:01:17)
So Long, and Thanks for All the Red Snapper - S4-E22
Continuity mistake: Cho opens the vent with a screwdriver and hands it back to the landlord (who pockets it). In the next shot Cho has it in his hand again finding the hidden drugs. (00:10:00)
Factual error: When Jane is changing the tire on his Citroen DS 20 he uses a car-jack, but because of that car's hydropneumatic suspension you don't need one. (00:00:19)
Suggested correction: Good one! The DS 20 is a fantastic car and you CAN use the high-lift suspension to lift the car up to change the tire, but you still need the jack stand - supplied in the Citroen kit - to keep the tires off the ground for changing. Most DS owners find it much easier to just use a regular jack.
Continuity mistake: When Cho finds Archie's notebook under the bed, he turns to near the end and starts reading Archie's entry. But the position of where Cho has the notebook open changes, depending on the camera angle.