I put a Raspberry Pi in my microwave.
Now my microwave has:
- Re-designed UI
- Nicer sound effects
- Clock is automatically updated from the internet
- Voice control
- Barcode-scanner to look up cooking instructions
- Online database of cooking instructions at http://www.microwavecookingdb.com
- Web page so you can control the microwave from your phone, and set up cooking instructions for products
- Tweets after finished cooking