There is only the before take-off checklist before and after the line now on my fleet.
We do however run it from the ECL on the B777, not sure what the differences for the 737 would be but I can have a look.
Before the line checklist incorporates:
Loadsheet received?
Data changes to final load sheet?
If Yes rerun performance and cross check
if No continue
Performance calculations correct for departure point of runway?
Take off brief updated (rebrief any performance issues or MEL items)
Cabin ready received
Transponder to TA/RA
----------------entering the runway line ---------------
Strobes on
Lights On
Cx Weather Radar on
TCAS approach path for departure runway looks clear
Confirm line up or departure clearance
Signal Cabin Crew