The posse album has recently become an integral (albeit rubbish) part of the superstar rapperโ€™s schtick. The idea is that having struck gold alone, the rap star then ropes in his mates for an album to quickly reflect some glory their way, too. G Unit is 50 Centโ€™s three-man posse, and Beg For Mercyโ€™s their follow-up to 50โ€™s magnificent recent debut, Get Rich Or Die Tryinโ€™. It isโ€ฆnot as good. Get Richโ€ฆstarred a desperate talent with axes to grind, unveiling sleek, menacing street-funk produced by Dr Dre and Eminem. Beg For Mercy features just a couple of autopilot Dre productions, and is otherwise a pale retread of Get Richโ€ฆfashioned by lesser talents. Success, too, has quickly dulled 50โ€™s urgent wit, and he coasts through the affair, happy simply to join in with Lloyd Banksโ€™ and Young Buckโ€™s clich