I don't think Moon Patrol makes the cut unless it's a game you really love. I personally don't see anything special about it. Lunar Lander is a different story though, but it all depends on what sort of collection you have/want. LL has a number of things going for it: it is a vector game; due to its controls it is not a game that can be replicated satisfactorily on a typical multi/mame setup; and it is fairly rare and therefore highly desired as a collectible/investment type of game (not that MP is not collectible, but not to the extent that LL is). Plus it is a fun and challenging game to boot, although it's not everyone's cup of tea.
So if you're looking for a showy collection of rarities that will impress other collectors, I would say LL might have a spot. I like the game and I like vector games, so if I had a LL it would be one of the last to leave my collection. But on the other hand, if you're looking more for games you like rather than games that look good in a collection, there may be others you like a lot more and cost you a lot less.