Overview: Australian band The Church and Irish solo artist Sinead O'Connor are featured in this edition of ""MTV Unplugged."" The Church band members Steve Killbey (bass/vocals), Peter Koppes (guitar/vocals) and Mary Willson-Piper (guitar/vocals) perform a collection of songs, including ""Under The Milky Way,"" the band's first Top 40 hit, as well as ""Metropolis"" from their new album Gold Afternoon Fix. Sinead performs acappella versions of ""Black Boys On Mopeds"" and ""I Do Not Want What I Haven't Got."" An excerpt from the MTV Unplugged book...""The other moments still resonate. The first is one of the most arresting moments in the Unplugged catalogue: Jules and Mary Willson-Piper of The Church came together for a tremendous rendition of the Beatles' 'Rain' (conceived the previous night as they stood waiting for a cab in a downpour) that reminded us of the purity that drove these shows in the first place. The second was the shock of discovering that Sinead O'Connor actually has a self-deprecating sens