Is there any way to view full podcast title on my iPhone running iOS 4?

There is a way, Though a bit strange.

If you choose to delete the podcast/file, you will get a Confirmation dialog with Delete/Cancel option.

1. Slide with your finger horizontal over the file and it will give you an option to Delete the file.
2. Choose Delete to show the second Confirmation dialog. There, you will be able to view the full name of the Podcast.

Be CAREFUL not to choose Delete or you will loose the file. And also the full name of the podcast.

Apparently the Podcast view doesn't support Cover View browsing until after you've chosen an episode, but if you've chosen an episode and it still isn't completely shown in the titlebar, rotate your device to landscape.

Here's what the normal view looks like, notice how the title is not complete in the title bar.