On a flight from Los Angeles to New York, you'll receive a radiation dose of 40 microsieverts. Equivalent doses:
- Two (2) chest X-Rays
- Eight (8) dental X-Rays
- Eating 400 bananas
- Sleeping next to someone for 2.2 years
XKCD has an excellent visualization depicting these doses, including the BED!
http://imgs.xkcd.com/blag/radiation.png
Source: http://xkcd.com/radiation/