Hello, I was wondering if any of you guys know any games (probably played online) where a professional is playing a player without them knowing it's a pro. And then getting totally destroyed by a professional.

One example would be the famous AgainstZen that played on KGS and "raped" a 5d few times. Even played against Ilya and won easily.

Sometimes I just like to watch games like that, where you take a mid strong amateur that would do the same to me, and then watch them trying to outsmart a pro

I don't see that attraction in that. Sandbaggers in general are not usually worth watching.

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Still officially AGA 5d but I play so irregularly these days that I am probably only 3d or 4d over the board (but hopefully still 5d in terms of knowledge, theory and the ability to contribute).

It's not fun to watch when you sandbag a beginner or even if a dan does it to kyu players. But when a mid strong amateur gets sandbagged by a pro, it is VERY fun to watch it.

If I may say so, there are definitely a lot of game records out there when a pro gives handicap and wins anyway

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http://tinyurl.com/japanesechess

Its a great learning experience if the amateur is around the watchers level, as you get so see the best way to exploit mistakes that happen every day at your own games.

One of the best chess books I ever read (chess master vs chess amateur) is set up that way and its a great read, shame I haven't found anything similar for go.

There's dwyrin's series on legend88's games. the first one is here.
I agree with paK0 that it is educational to see the difference in play and I think the amatures were aware they were playing a pro (so no egos were harmed in the making of these games).