Got a box of pennies today... (should I save 2009s)

So, today I got my second box of pennies (first was a couple weeks ago). It had a pretty decent Cu percentage, probably 25-30%. Only found 11 wheats this time (last time I got 26), a couple Canadian, close to a hundred 82s, a couple dozen 2009s... and a Polish 20 Groszy coin. So that's random. I expect to find Canadian pennies and maybe a Euro penny, but this thing looks nothing like a penny... oh well wiki says it's cupronickel so I guess it's worth more than a cent.
Anyway I had a question... it seems some people here save 2009s. Why? Are they rare? They don't seem to be. I was just wondering whether I should keep saving them seperately or just throw them in with the other zincolns.
Anyway I had a question... it seems some people here save 2009s. Why? Are they rare? They don't seem to be. I was just wondering whether I should keep saving them seperately or just throw them in with the other zincolns.