Both of mine run to the door barking and usually Ripley will grab a toy and prance around with it in his mouth and then drops it when he barks and picks it right back up again and the process is repeated.

If it is UPS or someone like that, I will step out on the porch to sign as I don't trust Ripley. He was picked up as a stray at the shelter, and he darted out my door about a month after we got him and we had a horrible time catching him (I think I know why he wound up as a stray). Bella would most likely stay put but, with two of them to keep my eye on, it is just easier to step outside.

When visitors come, I usually pick Ripley up until the door has safely closed behind them. Once the visitors are inside the barking stops but the tail wagging speeds up even more and Ripley always runs to get something in his mouth. Bella used to jump up on people but she doesn't any more. The only person Ripley jumps on is me when I come home (then it's like he has little springs on his feet.)