Crossword puzzle clue "followed like a p i"

What you'll see if you watch "Raging Bull" followed by "Taxi Driver" followed by "The King of Comedy"?

1990 Madonna tour that followed her "Like a Prayer" album: 2 wds.

It looks like a large comma followed by a small colon

Followed closely, like a dog

Followed like a P.I.

Followed like a sleuth

Followed a doctor's order?

    Followed, as advice