The most annoying and/or irritating 'collectibles' in a game...?

[TheYellowCellPhone]

The treasures from Uncharted. They were incredibly hard to find because they were nothing but little twinkles hidden away in some corner or some place you had no idea that existed and it's only purpose was to hide the treasure.

The treasures were stupidly hard to find, and you got no reward but a few achievements for finding them.

 

[Omnific One]

Feathers: AC2
Tech Orbs (for 100%): Enslaved
Light Seeds: PoP 2008

 

[Grimh]

Any game where the collectibles doesn't lead to a good ingame reward. I think audio logs can be rewards in and of themselves, but again, only if they're good. Make it it worth my time I guess is what I'm saying, and just giving me an achievement is not doing that.

 

[Dalek Caan]

The snow globes in New Vegas. They would be OK apart from the fact that if you missed one at a certain time in the game it would be forever lost.