I do the same thing with my revolvers, when the better half and I are watching TV. I'll take an unloaded revolver, grip it, and dry-fire while we while away an evening watching Netflix. Being able to pick a small object on the television and use that as point of aim - especially since more often than not it moves around a lot - has helped me immensely at the range.
Also, I enjoy using it to familiarize myself with a new acquisition before I go to my local range. Dry firing is free. Shooting is expensive.
The best part is, my wifey has learned to completely tune out the 'click click click' for hours on end.