You can already do a lot with PayPal on your phone: pay for Android apps, bump handsets to send money. And according to PayPal exec Laura Chambers, you'll soon—this week soon—be able to take a picture of the front and back of a check and deposit it into your account. Only iPhone was mentioned; it's not clear if Android devices will get the same functionality right away.
As TechCrunch notes, some banks are already allowing this, but it's a great fit for PayPal given its already strong mobile presence. I'm a little embarrassed to admit, I'm still a little squeamish about not handing money directly to a cashier. But I'm working through it, okay? [TechCrunch]