Minato is having 'personal problems' and is unwilling to share them with his team. Of course, his trio of young chuunin does not take well to being ignored. Battle-plans, dinner-plans, espionage, stalking - has Team Yellow Flash ever been capable of normal means of communication or team-bonding? Kakashi certainly doesn't think so. (Pre-Gaiden)
Drabble (100 words). Jiraiya met Kakashi in an alleyway once. Kakashi is holding a dog and Jiraiya has always been good at picking up strays.
Post-Fourth War. The day of the Summer Festival, Sasuke just wanted to be alone, meaning he'd have to hide from his overzealous teammates. Too bad he ran into Kakashi. On the flip side, they both aren't talkative anyways, so it wasn't that much of a problem. (Unless advice is asked, of course). (A Sasuke-returns-to-Konoha fic. Spoilers for chapter 674 and 675).
After Team Seven's disbandment, the Fifth Hokage requests Hatake Kakashi to serve as Anbu Captain once again. Needless to say, Kakashi had not expected this. (Set during Time-skip)
Post Fourth-war. Minato and Naruto visit Kakashi in the garden of the old Hatake-estate. Sitting on the porch, eating watermelon and discussing new D (or C)-ranked jutsu, they all agree it's a great day to do nothing out of the ordinary. (Attempted character-study. AU-ish)