I could say LMGTFY, but here goes:
1 - Most of the world's Muslims want Sharia to be the law of the land. This in itself shows a common mindset, that of theocracy.
2 - A high percentage want religious law to be applied to "family law".
3 - A high percentage favor corporal punishment.
4 - A high percentage think apostasy is a capital crime.
5 - A high percentage believe morality must come from god.
6 - A high percentage believe the following are wrong:
- homosexuality,
- prostitution,
- extramarital sex,
- alcohol,
- abortion.
7 - A high percentage think women should be veiled AND that wives must obey their husbands.
8 - A high percentage think religious leaders should have political influence.
9 - A high percentage think Sharia should have only one interpretation !
10 - A high percentage think Sharia should apply to non-Muslims.
11 - A high percentage think stoning should be the punishment for adultery.
12 - A scary percentage (maybe 10-15% ?), think suicide bombs against civilians can be justified.
13 - A significant percentage believe in polygamy.
14 - A scary percentage (maybe 30%?), think that when a women has extra-marital sex, honor killing can be justified.
15 - A high percentage believe sons should inherit more than daughters.
16 - A high percentage believe only Islam leads to heaven!
17 - A high percentage believe that evangelism is a religious duty.
18 - An extremely high percentage have ONLY other Muslims as friends.
19 - A scary percentage believe science conflicts with Islam.
20 - A high percentage are critical of western entertainment.
That's a start. You can read more here:
Appendix B: Glossary