How do signed & autographed affect items?

[gurpswoo1]

I have always wondered if getting an item signed is worth it.

If the game was popular then I would always say yes. I guess it depends on the person signing the game.

I have also noticed that in the vast majority of cases, the signed item is worth less in the long run than a sealed game.

However if the item signed is a Console the value is much higher.

Getting a signed copy of zelda by Shigeru Miyamoto is worth a considerable sum over the game itself, even more so if it was a limited edition zelda console.

However gettting the person that made just dance 2 to sign their game, I can't see that gaining value.

What do you think, do you have signed items in your collection?