The best guitar solo?
1. Bohemian Rhapsody: Sure, so it's not ten minutes long with flailing riffs and licks. But the technique and precision of each note is genius. Brian May is a true virtuoso, and that is why the second one is also by him, from Queen.
2. Brighton Rock: Have any of you heard this song? If so, then you know what the guitar solo is like. This is from their early days, but that made no difference. This guitar solo goes on, yet is so precise and amazing that it keeps you hooked.
Those are the best in my opinion. And hey, they are both by Queen.