What if you're faced with more than one subject at a time? Things… stay exactly the same. So what's the problem? Just that people tend to forget that.
When you come up against this issue, think about how you would write the sentence with each part individually. Would you say me went to Comic Con? Uh, not unless you wanted to sit in the corner wearing the Grammar Dunce cap.
Just remember: I is for subjects and me is for objects.
I do something, and something is done to me.
Same goes for he/him, she/her, we/us, and they/them.
Example 1
Check out this picture of Sinbad and I at an Atlanta Braves baseball game.
OR
Check out this picture of Sinbad and me at an Atlanta Braves baseball game.
Which one's right? Well, take out Sinbad out of the first option, and you're left with "Check out this picture of I…" Not great. "Check out this picture of me"? Much better.