window washing companies are joining together to help raise children's spirits. we first met them earlier this year dressed as superheroes. and now, as santa and his elves. this time of year. >> it will get kids who are laying in their beds, not feeling well, to kind of forget for a minute and just sit up, and be excited, and have something fun happening in -- right in their room. >> reporter: 6-year-old giovanni hamilton, who just got a new wheelchair, couldn't get to the window fast enough. where he got a personal wave and four hellos, straight from the north pole. what do you think about this giovanni? >> i like it. >> reporter: you like it? in fact, everyone likes it. >> santa's cleaning your window. look at that. >> reporter: that this many people would give their time to make children feel better. mark potter, nbc news, orlando. >> great ending to our broadcast on this monday night. as we start off christmas week. thank you for being here with us. i'm brian williams. we hope you'll join us right back here tomorrow evening. good night.