At 31:03, Gil is test firing a gun into the water chamber. From one angle, he is wearing gloves. Then the camera cuts to another angle when Nick walks in, and Grissom isn't wearing gloves. Cut back to the other angle and he's wearing gloves again.
At approx. 20 minutes 18 seconds in, Brass, Catherine and Warrick are investigating the death of a woman who died of heat stroke at a hotel spa. She scheduled an appointment for the Dry Sauna, but the Spa employee brings the CSI team into a white tiled room. Most Dry Saunas are made of softwood like cedar. Tiles are used in Steam Rooms, not saunas...
At approximately 7 minutes and 25 seconds into the episode we can see the "dead" body on the post mortem table exhaling.
when digging up the second body, you can see the eyelids move twice.
(at around 34 mins) Just as Sarah finishes talking, a female voice immediately says "Sorry." Although it appears to be in answer to Sarah's question it differs to the pitch of the man who they are questioning.