What You Waiting For didn't necessarily feel "big," but I was surprised when I first found out it peaked at #47. The video was all over MTV, the song went gold digitally (a great accomplishment at the time), and it sold L.A.M.B. pretty well (309k first week). Overall though I feel like it's pretty forgotten though
Dirrty is the best example imo. I only found out last year that it technically flopped in the US, totally shocking.