Steve Irwin's presence is still felt by family, friends and visitors at Australia's zoo. There aren't any reports of telekinetic incidents, i.e. objects being moved or knockings or anything of that nature, just a friendly presence. This is often the case with spirits. A person will feel a presence rather than having a bunch of phenomena happen. And while Steve was the sort of guy given to playing pranks, I believe that at this point he'd rather just let people know that he's still around. He knows how hurt his family and friends were by his death and he doesn't want to upset them. So he gives a psychic hug and a hello.
My spectral co-author often hugs me around the shoulders and I feel a very nice warmth. Which is especially pleasant, given the problems I have with my joints and muscles. He also musses my hair sometimes, but didn't do this at first because he didn't want to frighten me. Sometimes when he has something he really wants to say I'll feel tingling in the "third eye" area or in one of my thumbs.
A friendly spirit will never deliberately frighten someone unless it's someone they deem deserving, i.e. someone who hurts others. I've also encountered the other kind of spirit, as well as demons. But that's a story for another time.
