I am not a big begonia fan, but I have had this one, Begonia ‘Richardsiana’ growing in my kitchen for about a year. Not only is this an easy houseplant to grow (mine is in a northeast facing window) but check out those cutleaf maple-type leaves and the bulbous trunk, or caudex, which looks very bonsai-like.
This plant, a semi-tuberous begonia native to South Africa, is almost always in bloom. I grow it on the kitchen table so I can enjoy its strangeness. I keep it pinched back to maintain its shape.
I bought this one at Logee’s for less than $20. The plant was in an attractive but totally useless bonsai pot. I had to re-pot it after just a few weeks, because it was drying out so fast.