Indeed they do. I don't recall any strange oddities in any of the ones I've tested, but I haven't thoroughly tested about two-thirds of them.
To be frank, this past week is the first time using the system in a few years. After originally getting it in 2008, I thought it'd be cool to collect some of the relatively common titles just to see what gaming was like in an era long before I was born. At one point, I started needing to bring a list to local game shops so I'd know what I already had and what was new. Then, I lost the AC adaptor (a cheap universal one with a stupid end that came with the system on eBay, which I believe actually damaged the jack) around when I had 50 games, but I didn't stop collecting them until around 95 when I realized there wasn't much point buying games for a system I couldn't use or even remember what I owned.
Over this last summer, I've been paring down a LOT of gaming stuff (and a lot of knickknacks and miscellany I had stored away), across all the consoles I own. Any games I didn't like, enjoy, or feel right having in my collection would have to go out the door. Apart from the NES and 2600, everything went pretty smoothly. I picked up an AC adaptor last weekend for both systems so I could finally go through everything, particularly the 2600, where I barely knew any of the titles beyond the obvious (Adventure, Missile Command, Super Breakout, Yars' Revenge, and so on).
How the whole cleanup session went down was something like this. First, I checked if the game actually worked. If not, I swabbed it with rubbing alcohol. Once it worked, I tested out the game-play. Is it fun? Is it something I'd actually play if I pulled the system out? Would I play it with friends (multiplayer games)? Do I already own a superior version on another console? By those criteria, I got rid of (well, they're in the corner of the room) about 65 of them and kept the ones that I would play. Most of those weren't tested too thoroughly, but I'll admit I did have a game or two where I got addicted while testing. (And there are only about ten games overall with an AA rarity of 4, and one with 5, Time Pilot.)
After all that, I started researching the best games on the console (this thread being one I looked at a lot) and noticed a few titles I had played before that weren't in my collection that I had enjoyed. All but two (Tunnel Runner, H.E.R.O.) of the titles of interest are in my collection now thanks to local shops and eBay, but now I have no idea if I need to replace Pitfall II.
And that video is silly but really funny. Nice hack.
I might as well mention that I did spot a Swordquest: WaterWorld at a local shop, but they wanted $200 for it!
And speaking of crazy prices, I feel sorry for the suckers who paid $34.95 for Pac-Man in the early '80s.
(Yeah, off-topic, but I might as well mention those now.)