Rights of the Molotov Man and Ecstasy of Influence

Cryptomnesia! I always wondered if there were a word to describe that inkling I get when a creative idea feels to familiar. Usually when I feel those inklings I back off from the idea or adjust until I feel safe. Growing up I performed a lot of improv, at school and then at the Second City in Chicago. It was a great experience, something I often think back on, recall what I learned and then apply it to what I think it is relevant for. The reason I bring improv up is because of this Cryptomensia.
In improv the mind is circulating a million thoughts. A performer is listening to their partner(s) and responding. One only has a few seconds, in which the brain must discover and forefront the strongest or the funniest possible thought. In this high pressure environment, I've experience cryptomnesia. My mouth has exploded with a word, my body has performed an action and during the ensuing laughter something clicks. There is that gut reaction of something vaguely familiar, a deja vu of sorts. Often times I would discover, a line, an action, or maybe just the delivery came directly from a SNL skit. Or from a line in a movie. Upon realizing it, I felt like a fraud. I enjoy creating, and therefore I always try something different whenever I get the inkling of cryptomensia. But this cryptomensia is unavoidable. It happens and I don't think their should be any punishment for it. When the problem I also think of George Harrison and "My Sweet Lord", which sounds a lot like The Chiffons "He's so Fine", or The Strokes "Razorblade" and Barry Manilow's "Mandy". In both Harrison's song and The Strokes song, there are chord progressions which match another song, what happened? George Harrison settled court and lost some money, the strokes never play razorblade. I don't think Harrison should have lost money, and I don't think the strokes should stop playing razorblade.
I think that its a new piece, new art, and should be respected as such.