Many years ago there was several shows on TV that would interact so to speak with other shows. Petticote Junction and green acres. one I remember was ricky and lucy going through mayberry with cousin tennesee Ernie Ford. There were others. Can you imagine CTU and another LA cop show interacting with guest appearances. Now think about doing that with three or four different shows through the week.
I love it!!! Okay, here's one for you. Bree from Desperate Housewives (I love that show) joins CTU as an under cover agent (there is an episode where Bree unexpectedly fires a shotgun out the window to get a creep off her lawn). Bree could be the next Chloe.
Or how about terrorists are hiding on Wisteria Lane and Chloe has a shootout in the middle of the street. Gaby and Susan are seen running for their lives.