would like to add :
1. ibirthday. -can keep track of birthday dates in ur contacts.it will help u notify when the birthday comes.
2.mapssoffline - u install this program and just let it be.the effect is,it will automatically saves the maps that u viewed.later on,u don't need wifi connection to view the maps again.

hurm..others,ithink been added by other ppl edi.i got so many packages installed..so,i'll just list down things that nvr listed before.