Movie stars like Tom Hanks are rich and everyone kisses their ass, so if you want one of them to do you a favor, you have to be creative. Nerdist wanted Hanks to do their podcast, so they got a 1934 Smith Corona typewriter (sorta like this), typed up an invitation, then sent the invitation and typewriter to Hanks. Because I guess he's into typewriters or something.
And it worked. He typed this letter back and said yes.
You have to be careful when you do this kind of thing however. Amanda Seyfried likes taxidermy for example, but you can't just send her a dead fox and a note that says, "You two foxes belong together." Oohh no, according to that cock-blockin judge, that's "threatening".