Les Miserables Based on the novel, long and grim, by Victor Hugo, and from the people who brought you the RoyalShakespeare Company's production of The Life and Adventures of Nicholas Nickleby. Yes, co-directors Trevor Nunn and John Caird know how to pack the stage with actors in period costumes, and pack theaters. This show has been seen by millions -- millions -- and is back by popular demand. The original Broadway smash was huge and costly and the road show is one of the hugest and costliest of all time. If you missed this production of the award-winning musical the first time around, order your tickets now. Opening 8 p.m. tonight. Through March 26 with matinees Thursday, Saturday and Sunday. Brown Theater, Wortham Center, 500 Texas, 629-3700. $25-$45.