Watch the first season. It stars Christopher Eccleston. And, yes, Tennant is goofy at times as the Doctor -- he starts second season, BUT the Doctor IS goofy at times, and he also does the serious, hard-hitting stuff really well. But watch the first season. I actually waited almost two full years before I watched the second without Eccleston because I loved him so, but aside from still preferring Eccleston (I mean, come on! It's Christopher Eccleston!) I actually preferred season two overall. And Tennant won me over to loving him too. (I so have got to make a Rose/Ten icon, I really, really do!!)