For my own amusement, I went back over the past few drafts and here's a list of the best 2nd rounders:
2008
31 Minnesota Nikola Pekovic Serbia - C
34 Minnesota Mario Chalmers Kanses - PG
35 Clippers DeAndre Jordan Texas A&M - C
36 Portland Omer Asik Turkey - C
45 San Antonio Goran Dragic Slovenia - PG
2009
33. Trail Blazers Dante Cunningham PF
39. Pistons Jonas Jerebko SF
41. Bucks Jodie Meeks SG
42. Lakers Patrick Beverley PG
46. Cavaliers Danny Green SF
2010
33 Sacramento Kings Hassan Whiteside C, 7-0, 235 Marshall
40 Indiana Pacers Lance Stephenson G, 6-5, 225 Cincinnati
55 Utah Jazz Jeremy Evans F, 6-9, 190 Western Kentucky
2011
38. Rockets Chandler Parsons SF
40. Bucks Jon Leuer PF
60. Kings Isaiah Thomas PG
2012
34. Cavaliers Jae Crowder SF
35. Warriors Draymond Green SF
37. Raptors Quincy Acy SF
39. Pistons Khris Middleton SF
40. Trail Blazers Will Barton SG
2013
31. Cavaliers Allen Crabbe SG
47. Hawks Raul Neto PG
55. Grizzlies Joffrey Lauvergne PF
2014
32. 76ers K.J. McDaniels SF
38. Pistons Spencer Dinwiddie PG
39. 76ers Jerami Grant SF
41. Nuggets Nikola Jokic PF
2015
37. 76ers Richaun Holmes PF
40. Heat Josh Richardson SG
46. Bucks Norman Powell SG
It seems like the pickings have been getting slimmer, but of course, for the most recent drafts, some of them haven't had a chance yet (particularly the draft'n'stash ones).
All-star team from those listed:
33. Hassan Whiteside (2010)
34. Jae Crowder (2012)
35. Draymond Green (2012)
35. DeAndre Jordan (2008)
38. Chandler Parsons (2011)
39. Khris Middleton (2012)
41. Nikola Jokic (2014)
45. Goran Dragic (2008)
46. Danny Green (2009)
60. Isaiah Thomas (2011)