Plants add a touch of nature to a room and blend with almost anything. Whether an "unusual" plant is a good choice may depend on why it stands out. Is it a unique color, an unusual shape? Or has it just overgrown and become large or spindly? Does it fit in the room - scale-wise and also with the decor? The plant is not the selling feature, so make sure it doesn't detract from the room and adds an interesting highlight.