What happens in the Pokemon games when you catch all possible Pokemon?

[MANUELF]

izaaz101 said:

I got a certificate in red (thanks to pokemon red, pokemon stadium and the transfer pack) and all I remember was it saying congratulations, you caught all 150 or something like that. Never got all the pokemon in any other games (seems impossible now with close to 500).

Edit: Forgot to add, you have to go an get it from a guy.

With Wi-Fi and GTS is more easy than before, Pokemon pearl is the first pokemon game where I caught all the pokemon(493) OT: You got a certificate and one star in your TC.