Please submit useful plugins like …!?please! please!

Hello
i am not english!i search plugins but can not find this…
Please submit useful multi-site plugins in this topic please!!!
1,2-like, best plugin for manage ads in blogs and users admin panel.
3-…chang theme’s css by users.
4-best manage plugins(…upgred VIP..)!
5-make forums by users for blogs.
6-best seo plugin for multi site.
7-best cache plugin for multi site
8-slideshow for blogs that support most of thems.
9-for changing admin panel’s helps.
10*-and a plugin similar this(this is important for me please help me!)
or each plugin that think is useful!!!
thanks very much and i am wating your guidens!

[No bumping, thank you. If it is that urgent, hire someone.]