R&B superstar Usher leads the Hot Tours list this week with totals from the final 10 concerts on the North American leg of his OMG Tour.  The fall leg wrapped on New Year's Eve at American Airlines Arena in Miami with a sold out crowd of 12,992 in attendance. The tour, however, was not on hiatus for long.  Usher kicked off the 2011 portion on Jan. 12 in Berlin at the O2 World Arena, the first of 41 venues booked in Europe, Dubai and Australia through early April.  Since its start on Nov. 10 in Seattle, the OMG Tour has grossed more than $28.5 million with nearly 377,000 tickets sold at 28 arenas.

Earning the No. 2 ranking is Michael Bublé with final totals reported from the European leg of his Crazy World Tour.  Included in this week's tallies are the grosses from four venues located in the Netherlands, Spain and Portugal.  The first was GelreDome, a 34,000-seat, retractable-roof stadium in Arnhem, Netherlands where Bublé drew 24,313 fans for a performance on Oct. 28.  Two concerts followed in Spain: one at Barcelona's Palau Sant Jordi on Oct. 30 and one the following evening at the Palacio de los Deportes in Madrid.  Wrapping the European leg of the tour in Portugal, the final two performances were on Nov. 2-3 at the 17,000-seat arena, Pavilhão Atlântico in Lisbon.  Following the European shows, Bublé returned to North American to close out the year with performances through mid-December.  Box office totals from those shows have already been reported to Billboard and appeared in the Hot Tours rankings in previous weeks.

$3.1 million in box office grosses reported from the Trans-Siberian Orchestra's annual winter tour give the rock orchestra the No. 3 ranking on this week's Hot Tours list.  The total comes from six performances at four U.S. arenas including Philadelphia's Wells Fargo Center that sold 22,449 tickets for matinee and evening performances on Nov. 20, grossing just over $1 million.  The highest single-show attendance was at Tampa's St. Pete Times Forum with 17,579 in the house on Dec. 11.