Here's a typical one at Alaska.
"Good Morning Ladies and Gentleman and welcome aboard Alaska Airlines flight XXX with service into Ketchikan. As you are making your way to your seat today, we ask that you step into your row and enable those behind you to pass by. This will help expedite the boarding process and help us ensure an on-time departure. Please keep in mind that Federal Regulations require that all passenger carry-ons be properly stowed completely underneath the seat in front of you or in one of the shared overhead bins. However, if you are seated at a bulkhead row, all bags must be put in the overhead for takeoff and landing as the area at your feet, on the seat next to you, and on your lap is not FAA approved stowage. This includes ladies handbags, purses, briefcases, diaper bags, etc.
If you are seated in an emergency exit row today, please take a moment to review the safety information card found in your seat back pocket. If you have any questions or concerns about the added responsibilities of sitting in an exit row, please let a flight attendant know.
All portable electronic devices must be turned off and probably stowed for take off. This includes laptop computers, hand-held games, cd players, gameboys and PDA's. Cellphones must be turned off for departure. At no time do we allow the use of wireless internet devices, AM
/FM radios, GPS or television sets.
Flight attendants, secure aft galley and cabin for departure.
[Edited 2005-01-12 04:56:04]