These guys are Trinket software are cool! they keep on building and releasing simple yet useful applications that YOU WILL USE unlike apps that do nothing but let you watch swimming fish.
The latest app is called Do Not Disturb which is currently in beta, allows you to configure your Windows Mobile device to capture incoming calls even before the phone rings and perform custom behaviors based on how you’d want them handled.
There are other cool apps from Trinket, download them here:
PowerSMS Fake Call