i'm not sure, if rock is your style, you need to stick to that style, because it is you, and changing that would make you 'fake', with that being said, i would say some nirvana (the slower songs, not the rape your ears type, although i like that type, i doubt it would really impress them) or maybe some metallica, everyone can relate to metallica, hell i've know full blown thugs who listen to metallica.... i'm not sure of a song by nirvanna, but i think one by metallica is right up your alley... you're almost gonna definately want some rock from the 80's if you take my advice, as it was always really saturated with guitar... but this is just my suggestion, in the end it needs to be something you feel is your style, and ultimately it's all your choice. but you have to admit, metallica songs played on the guitar solo almost always sound good.