Graphic Books Best Seller List (Manga) for the Week Ending 4 July 2009
Since vol.45 of Naruto got released the Naruto titles all got an upswing during this week, taking in positions. Bleach which held the 1st position in the previously presented list dropped to 5th.
In the lower section of the top 10 list we find The Melancholy of Haruhi Suzumiya in 8th and also Lucky Star at 10th position.

Here is this weeks list:

1: NARUTO, VOL. 45
2: FRUITS BASKET, VOL. 23
3: NARUTO, VOL. 43
4: NARUTO, VOL. 44
5: BLEACH, VOL. 27
6: NARUTO, VOL. 42
7: NEGIMA!? NEO MAGISTER NEGI MAGI, VOL. 2
8: THE MELANCHOLY OF HARUHI SUZUMIYA, VOL. 3
9: OURAN HIGH SCHOOL HOST CLUB, VOL. 12
10: LUCKY STAR MANGA, VOL. 1

Source: NY Times Manga Best Seller List


Related to these top 10 sales lists is a newspost originally made by lee3319 and incorporated into this newspost as well:

Bleach becomes this month's #1 graphic novel in US
Tite Kubo's Bleach has ended Watchmen's 11-month run at #1 for this month's bestselling graphic novel in the US. Bleach volume 27 is the first book, apart from Watchmen to top the chart since June 2008.

Other manga such as Naruto, Rosario + Vampire were also in the top 20 chart as there were only three places in the chart which weren't manga.

Source: ICv2