heartwarming

from WordNet (r) 3.0 (2006)

heartwarming
    adj 1: causing gladness and pleasure; "Is there a sight more
           heartwarming than a family reunion?"

from The Collaborative International Dictionary of English v.0.48

heartwarming \heart"warm`ing\, heart-warming
\heart"-warm`ing\adj.
   causing gladness and pleasure; -- used mostly of the actions
   of people, and sometimes of animals; as, Is there a sight
   more heart-warming than a family reunion?.
   [WordNet 1.5]