Greatness of Fasting in Sha'baan

‘Aa’ishah (may Allaah be pleased with her) said:
The Prophet (peace and blessings of Allaah be upon him) did not fast in any month more than Sha’baan, and he used to fast all of Sha’baan and he used to say: “Do as much of good deeds as you can, for Allaah does not get tired (of giving reward) until you get tired.” And the most beloved of prayers to the Prophet (peace and blessings of Allaah be upon him) was that in which one persists even if it is little. When he offered a prayer he would persist in doing so.
(Bukhari)

{Fasting in second-half of Sha'baan can be Makrooh (disliked): http://www.islam-qa.com/en/ref/49884 }