Carnival isnt here yet, but in Rio 75 street parades are scheduled ths weeked alone. On Friday the biggest will probably be Cordao da Bola Preta, Saturday sees Simpatia é Quase Amor, on of Rio's other really popular blocos, parading in the afternoon in Ipanema. On sunday here's anothe huge bloco, Suvaco da Christo, starting at 9am in a geerallu unsucessful attempt to discourage enormous crowds. For full details of these and many more blocos this weekend, visit our Rio carnival bloco schedule page.
Update - the press reckon the quarter of a million people participated in street blocos in Rio over the weekend - and carnival is still a week away!