Actually I think he meant to use Tokens on the page.
YES, you can use any token on a landing page. Just pull in the token icon to the text field and choose what you want.
Welcome, {{lead.First Name}} to your customized page on {{lead.Product Interest}}
So as long as the lead was cookied, their info will fill in. You can do this with My Tokens as well to ensure a dynamic webinar page or Program Template that can be updated quickly via My Tokens.
The form will prefill as well assuming you did not turn that off.
You can also use Dynamic Content, but I recommend looking up the directions for that.