Misc: which song's does the "don't look back in anger" intro sound like?

Questions

Who still receives an estimated 25 pieces of junk mail per year at Walden Pond?

Whose car, when found in Dallas in 1963, contained brass knuckles, a pistol holder, and a newspaper detailing JFK's motorcade route?

Who announced his retirement from football after nine seasons in the NFL on the set of The Dirty Dozen in London?

What two word term is considered the lowest possible temperature?

What country used the deadly nerve gas SARIN against Kurdish minority factions in the 1990s?