In a 1970 interview with Rolling Stone, Jimi Hendrix was asked "how does it feel to be the best guitarist in the world?" His reply? "I dunno man, ask Rory Gallagher." He had a point there.
On watching that clip, the word effortless springs to mind, closely followed by the word fuck. The next clip is a fucking lesson in what a bottleneck is for. Pay attention, you will learn something.
I would fucking kill for that rhythm section. Although I wouldn't be able to look at the bass player onstage because I'd be too busy laughing to play the fucking guitar. Here's a couple more slabs of slide magic, an unaccompanied electric version of Gambling Blues from the Isle of Wight festival, followed by an outfuckingrageously shameless version of Bullfrog Blues live in Paris in 1980. The man was a fucking god.