We had our TV on the Disney Channel, and part of the show on caught my eye, so I watched for a moment. There were CGI characters in an arcade. As they walked around, I noticed one of the games had a familiar-looking image. It looked like it was the first level of Cave Story, with Quote just hopping up and down. I checked the name of the show, and it was the episode "Goin' Bananas" of "The Suite Life on Deck."
I found the episode on YouTube in 3 parts. The arcade section starts at 7:04 of part 2 and continues to the beginning of part 3. You can see it quite well at the beginning of part 3, once the cat moves out of the way. XD
Part 2 - The arcade part starts at time 7:04, at 7:14 you can get a really good look at it, as it's in the very center of the screen, the arcade section stops at 7:28, then resumes at 7:33 and goes to the end at 8:00.
Part 3 - It continues where part 2 left off at 0:00, the cat jumps off at 0:25 and you can see it clearly again, the arcade section stops at 0:37, the arcade is shown again at the end, but you can't see any of the Cave Story machines.
All in all, there appears to be 4 Cave Story arcade machines, one at the very right of the arcade, one at the very left, and two in the row in the back, one at the very right corner and one in the middle.
I thought this was neat, and wanted to share it with everyone here. ^_^