I liked Solaris while watching it, but it's one of those movies that's kind of "stuck" with me. I find myself thinking about it at random moments, just kind of pondering its themes. I've always been interested in the fine line of "real" and "creation" (my favorite movie is Ghost in the Shell (1995)), and I think Solaris does a good job exploring the interesting themes about how our memories of a person an the actual person are different and the same.

It being free on YouTube is as good of an excuse as any to re-watch it.