Both my little boys are on the go from dawn until dusk. I think that most toddlers are.
I get the comments too about how busy they are and how they won't stay still.
15 months is a really common time to have acute seperation anxiety, it will settle down. 6 weeks ago Imran would scream the house down every morning when DH went to work and cry when we left his brother at CC but now he waves bye-bye happily.
It seems to be a bit cyclical, I think he's torn between wanting to assert his independance and being a bit scared of being seperated from us.
Both my boys are great pointers, I usually interprate it as a request for more information so I'll name the object and tel them as much as I can about it.