A Sudden Mashiah
One of the things Geula-bloggers (including myself) do is follow news events that point to Hashem's plan for the Final Redemption unfolding little-by-little. There is ample basis for this view - most notably, Shir Hashirim Rabba 6:16.
However, there is another view out there that Mashiah will come suddenly. Rabbi Reuven Cohen's book entitled "Livyas Chein" on Parshat Vayeshev quotes Rav Yaakov Kamenetzky ZT"L as taking this approach. He says that it is useless and a waste of time to follow news events to show that Mashiah will be coming soon as there is absolutely no way to predict his arrival. This is, according to him, because his arrival must be sudden - and an integral part of Mashiah coming is the suddenness of it all.
One example from the Torah that shows its suddenness is the birth of the twin baby boys of Yehuda and Tamar - Peretz and Zerah. It was known to Yehuda and Tamar beforehand that the one to be born first would be the ancestor of Mashiah. Zerah stuck his hand out first and at that point, everyone thought that Zerah would be the patriarch from whom the Mashiah would descend. However, all of a sudden, Peretz came out first and the midwife said, מה פרצת עליך פרץ - as if to say, "How did that happen?" The birth of the ancestor shows the suddenness of his descendant Mashiah's arrival as well.
Whichever way Mashiah is supposed to come, whether via a process or out of the blue, may he come speedily in our days, Amen.