I just released a new timer app for android (2.1+).
The new thing is that you can create timer definitions on QR codes and NFC tags. The QR code contains all the information necessary to launch the timer.
Also the NFC tags are totally independent because they also store the complete timer information. Just touch a NFC tag and it launches a Timer. This only works with mobiles which support NFC like the Nexus S.
Last but not least you can scan a barcode and assign it a Timer. For example for a frozen pizza or how long do you want to freeze you beer in the fridge.
Please give it a try and tell me what you thing. Itís free.
You can find some more information and screen shots at qrtimer.com/help